Glasgow Surname Project

Individual research record

Mary Esther (Billings) Glasko

c. 1823 – c. 1893-04-02

Billings-3866 · 1 mapped association

Griswold, New London, Connecticut, United StatesSprague, New London, Connecticut, United States

At a glance

Identity & family

Tree links organise the family; documentary status still varies.

1Mapped records
3Close relations
8Evidence items
2Candidate leads
Birth
c. 1823 · Griswold, New London, Connecticut, United States
Death
c. 1893-04-02 · Sprague, New London, Connecticut, United States
Parents
Not recorded
Spouses
Isaac Moodey Glasko
Children
James A GlaskoLucy Elizabeth Glasko
Gender
Female
WikiTree
Billings-3866
Research clusters
Worldwide One-Tree profile leads
Mapped descendants
2

Comparison context

These child positions and checks are the subject details used to rank possible parents below.

Naming sequence used by the parentage model

Paternal grandfather positionJames A Glasko (1860)
Maternal grandfather positionNot identifiable from dated child profiles
Maternal grandmother positionLucy Elizabeth Glasko (1846)
Paternal grandmother positionNot identifiable from dated child profiles

Known-position checks: 0 support · 1 conflict. Ordinals retain unnamed children and recognise reused names.

Relationship comparison

Potential parents or duplicates

Compare scored leads with the subject details above—not proof.

Higher-signal leadReview carefullyWeak lead

No candidate met the minimum age, location or family-naming threshold.

How parent leads are calculated

Automated leads use birth surnames—not married surnames—as parental eligibility, role-specific biological age limits, bounded and approximate-date uncertainty, household chronology, specific time-aware localities, mapped distance, tenancy succession, migration destinations and sex-aware Scottish naming positions across generations. People already attached as the subject's parents stay in the identity summary and are excluded from this alternative-candidate list, regardless of relationship confidence. The main calibration uses clues available on disconnected profiles; existing parent and sibling links are retained as comparison context rather than treated as transferable evidence. Common ordered names and grandparent-to-child echoes receive a small non-zero weight, so a John or James match can support several independent criteria without producing a lead alone. Rare names, repeated bearers and bundles across otherwise distinct branches receive substantially more weight according to catalogue frequency. An exact migration place is weighted by its rarity and repetition across both branches; a shared destination country is worth only one point. Extra weight is added only when at least three independent clue types converge: naming, locality, specific migration, household chronology or collateral networks. Sparse profiles retain a clearly labelled chronology-only fallback instead of disappearing. Countries, states, counties and research clusters do not count as a shared locality, and fallback, broad representative or kin-inferred coordinates are excluded from distance scoring. Shared descendant profiles are removed before branch-name comparison. A candidate already recorded as a parent-in-law is excluded. A confident or independently supported parent is treated as settled; uncertain and unassessed attachments remain open to alternative comparison. A different linked parent, an uncle/aunt or grandparent path, and a matching existing child profile prevent an alternative from being classified as a strong direct-parent lead until the underlying tree conflict or duplicate is resolved. Familiar forms such as Bessie are normalised. Surname remains an eligibility filter worth zero points.

Naming customs, shared farms and occupations are circumstantial. Children, spouses and collateral relatives may be missing, and tree-derived family networks are not independent evidence. Scores rank research leads; they do not prove parentage.

Automated fit48/100
Similar Person
Dates1823–1882PlacesWindsor, New South Wales, Australia → Sydney, New South Wales, AustraliaParent comparisonNo shared parent is indexed
Why it may fit
  • same first and last name (+18)
  • same birth year (+30)

No indexed conflict

Full comparison detail
  • same first and last name (+18)
  • same birth year (+30)

Conflicts: No indexed conflict

Automated fit45/100
Similar Person
Dates1824–?PlacesPlaces not recordedParent comparisonNo shared parent is indexed
Why it may fit
  • same first and last name (+18)
  • birth years within 1 (+25)
  • child given-name pattern overlaps: James

No indexed conflict

Full comparison detail
  • same first and last name (+18)
  • birth years within 1 (+25)
  • child given-name pattern overlaps: James

Conflicts: No indexed conflict

How duplicate leads are calculated

Dates are eligibility gates, not merely deductions: chronologically impossible people are excluded. Dates, places, spouses, parent certainty and children's profiles and names are then compared. A high score is a prompt to inspect records, not a merge recommendation.

Open only what you need

Research & records

Life and record timelineChronological mapped occurrences and their underlying sources.1 record
b. 1823

Profile-stated birthplace: Griswold, New London, Connecticut, United States

Griswold, New London, Connecticut, United States

One-Tree export profile fields are search leads, not sources; relationships are shown only where the export supplies parent links.

One-Tree profile leadunknown
Source and mapping detail

WikiTree profile export for Billings-3866

No sufficiently specific citation match found.

Precision: Country-centre fallback for profile locality

Evidence assessmentWhat is supported, uncertain or disputed in the current case model.4 claims
4Derivative
3Unknown
1Tree Only

Documented or strongly supported

No claims in this category have been formally assessed.

Working hypotheses and conflicts

No claims in this category have been formally assessed.

Research questionsOpen problems, missing bridges and the next records to inspect.0 open

No formal open question is recorded for this person.

Sources and provenanceStructured citations and source-quality classifications.8 sources

Source or provenance: quality describes the record layer, not every conclusion drawn from it.

  1. unknown 1850 Census: "United States, Census, 1850" citing Affiliate Name: The U.S. National Archives and Records Administration (NARA); Affiliate Publication Number: M432; Affiliate Film Number: 49; Line: 3; Digital film/folder number: 004181039; FHL microfilm: 442881; Image number: 245; Record number: 9971; Packet letter: A; Indexing batch: N00957-9 (accessed 8 February 2026) Mary E Glassko (25) in Griswold, New Londo
  2. unknown 1860 Census: "United States, Census, 1860" citing Page: 24; Affiliate Name: The U.S. National Archives and Records Administration (NARA); Affiliate Publication Number: M653; Digital film/folder number: 005165660; FHL microfilm: 803089; Image number: 221; Record number: 8016; Packet letter: A; Indexing batch: N01693-0 (accessed 8 February 2026) Mary E Glascow (36) in Griswold, New London, Connecticut, United Sta
  3. unknown 1870 Census: "United States, Census, 1870" citing Page: 82; Affiliate Name: The U.S. National Archives and Records Administration (NARA); Affiliate Publication Number: M593; Line: 11; Digital film/folder number: 004263328; FHL microfilm: 000545613; Image number: 624; Record number: 24702; Packet letter: A; Indexing batch: N01469-0 (accessed 8 February 2026) Mary E Glassgow (46) in Sprague, New London, Connectic
  4. derivative "United States Census, 1850," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:M68T-KC1: 19 December 2020), Mary E Glasko in household of Isaac M Glasko, Griswold, New London, Connecticut, United States; NARA microfilm publication (Washington, D.C.: National Archives and Records Administration, n.d.).
  5. derivative "United States Census, 1860", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MHRW-RVR: 18 February 2021), Mary E Glascow in entry for Isaac M Glascow, 1860.
  6. derivative "United States Census, 1870", database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MN7G-3RD: 28 May 2021), Mary E Glassgow in entry for Isaac Glassgow, 1870.
  7. derivative "United States Census, 1880," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MFZ9-PW2: 13 January 2022), Mary Glasgow, Sprague, New London, Connecticut, United States; citing enumeration district , sheet , NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm
  8. tree_only WikiTree profile export for Billings-3866
Technical profile and raw captureDataset metadata, machine dossier and captured WikiTree biography.Advanced

WikiTree profile information

Dataset: ONT_Glasco_2026-08-18T16_05.json · generated 2026-08-20

Machine-readable dossier

WikiTree biography, citations and relationship snapshot

Billings-3866 was captured 2026-08-07T09:54:35+00:00; WikiTree profile revision 2026-03-22.

Profile location claims

EventDateLocationStatus
birthGriswold, New London, Connecticut, United StatesWikiTree profile field
deathSprague, New London, Connecticut, United StatesWikiTree profile field
marriage1844-02-02Voluntown, New London, Connecticut, United StatesWikiTree relationship field

Immediate relationship snapshot

RelationshipPersonWikiTree IDDates and places returned
ChildrenLucy Elizabeth GlaskoGlasko-91846-01-12 · Connecticut, United States · 0000-00-00
ChildrenCharlesGlasko-101847-08-01 · Griswold, New London, Connecticut, United States · 1902-09-12 · Sprague, New London, Connecticut, United States
ChildrenWilliamGlasko-111850-00-00 · Connecticut, United States · 1870-05-18 · Worcester, Massachusetts, United States
ChildrenGeorgeGlasko-121851-00-00 · Connecticut, United States · 0000-00-00
ChildrenJames A GlaskoGlasko-221860-00-00 · Connecticut, United States · 0000-00-00
ChildrenWalterGlassgow-101865-07-05 · Griswold Island, New London, Connecticut, United States · 1921-08-21 · Burrillville, Providence, Rhode Island, United States
SpousesIsaac Moodey GlaskoGlasko-31813-11-16 · Griswold, New London, Connecticut, United States · 1877-08-25 · Norwich, New London, Connecticut, United States · 1844-02-02 · Voluntown, New London, Connecticut, United States

Profile categories

Connecticut, Free People of Color Connecticut,_Free_People_of_Color USBH Free People of Color, Linked USBH_Free_People_of_Color,_Linked

Record-bearing passages

  • Biography Mary E. Billings was born about 1823, and died on April 2, 1893.
  • Mary was born in Connecticut around 1823. She married Isaac Glasgow. Children: # Lucy Glasgow (1847-) # Charles 1848 # William 1850 # George 1852 # Ellen 1856 # James A Glasgow (1860-) # Walter 1866 Census Records In the 1850 census Mary (age 25) was in Griswold, New London, Connecticut, United States. 1850 Census: "United States, Census, 1850" citing Affiliate Name: The U.S. National Archives and Records Administration (NARA); Affiliate Publication Number: M432; Affiliate Film Number: 49; Line: 3; Digital film/folder number: 004181039; FHL microfilm: 442881; Image number: 245; Record number: 9971; Packet letter: A; Indexing batch: N00957-9 (accessed 8 February 2026)
  • Mary E Glassko (25) in Griswold, New London, Connecticut, United States. Born in Connecticut. {| border="1" cellpadding="4" |+ 1850 United States Federal Census: Griswold, New London, Connecticut |- bgcolor=#E1F0B4 | Name || Sex || Age || Occupation || Birth Place |- | Isaac M Glassko || M || 36 || || Connecticut |- | Mary E Glassko || F || 25 || || Connecticut |- | Lucy E Glassko || F || 5 || || Connecticut |- | Charles F Glassko || M || 2 || || Connecticut |- | William A Glassko || M || 8 months || || Connecticut |}
  • In the 1860 census Mary (age 36) was in Griswold, New London, Connecticut, United States. 1860 Census: "United States, Census, 1860" citing Page: 24; Affiliate Name: The U.S. National Archives and Records Administration (NARA); Affiliate Publication Number: M653; Digital film/folder number: 005165660; FHL microfilm: 803089; Image number: 221; Record number: 8016; Packet letter: A; Indexing batch: N01693-0 (accessed 8 February 2026)
  • Mary E Glascow (36) in Griswold, New London, Connecticut, United States. Born in Connecticut. {| border="1" cellpadding="4" |+ 1860 United States Federal Census: Griswold, New London, Connecticut |- bgcolor=#E1F0B4 | Name || Sex || Age || Occupation || Birth Place |- | Isaac M Glascow || M || 47 || || Connecticut |- | Mary E Glascow || F || 36 || || Connecticut |- | Charles F Glascow || M || 12 || || Connecticut |- | William A Glascow || M || 10 || || Connecticut |- | George A Glascow || M || 8 || || Connecticut |- | Ellen M Glascow || F || 4 || || Connecticut |- | James A Glascow || M || || || Connecticut |- | Mary J James || F || 21 || || Connecticut |}
  • In the 1870 census Mary (age 46) was in Sprague, New London, Connecticut, United States. 1870 Census: "United States, Census, 1870" citing Page: 82; Affiliate Name: The U.S. National Archives and Records Administration (NARA); Affiliate Publication Number: M593; Line: 11; Digital film/folder number: 004263328; FHL microfilm: 000545613; Image number: 624; Record number: 24702; Packet letter: A; Indexing batch: N01469-0 (accessed 8 February 2026)
  • Mary E Glassgow (46) in Sprague, New London, Connecticut, United States. Born in Connecticut. {| border="1" cellpadding="4" |+ 1870 United States Federal Census: Sprague, New London, Connecticut |- bgcolor=#E1F0B4 | Name || Sex || Age || Occupation || Birth Place |- | Isaac Glassgow || M || 56 || || Connecticut |- | Mary E Glassgow || F || 46 || || Connecticut |- | Charles F Glassgow || M || 22 || || Connecticut |- | George Glassgow || M || 19 || || Connecticut |- | Mary E Glassgow || F || 14 || || Connecticut |- | James A Glassgow || M || 10 || || Connecticut |- | Walter P Glassgow || M || 4 || || Connecticut |} Sources

    • "United States Census, 1850," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:M68T-KC1: 19 December 2020), Mary E Glasko in household of Isaac M Glasko, Griswold, New London, Connecticut, United States; NARA microfilm publication (Washington, D.C.: National Archives and Records Administration, n.d.).
  • "United States Census, 1860", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MHRW-RVR: 18 February 2021), Mary E Glascow in entry for Isaac M Glascow, 1860.
  • "United States Census, 1870", database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MN7G-3RD: 28 May 2021), Mary E Glassgow in entry for Isaac Glassgow, 1870.
  • "United States Census, 1880," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MFZ9-PW2: 13 January 2022), Mary Glasgow, Sprague, New London, Connecticut, United States; citing enumeration district , sheet , NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm

Profile source citations

  1. 1850 Census: "United States, Census, 1850" citing Affiliate Name: The U.S. National Archives and Records Administration (NARA); Affiliate Publication Number: M432; Affiliate Film Number: 49; Line: 3; Digital film/folder number: 004181039; FHL microfilm: 442881; Image number: 245; Record number: 9971; Packet letter: A; Indexing batch: N00957-9 (accessed 8 February 2026) Mary E Glassko (25) in Griswold, New London, Connecticut, United States. Born in Connecticut. {| border="1" cellpadding="4" |+ 1850 United States Federal Census: Griswold, New London, Connecticut |- bgcolor=#E1F0B4 | Name || Sex || Age || Occupation || Birth Place |- | Isaac M Glassko || M || 36 || || Connecticut |- | Mary E Glassko || F || 25 || || Connecticut |- | Lucy E Glassko || F || 5 || || Connecticut |- | Charles F Glassko || M || 2 || || Connecticut |- | William A Glassko || M || 8 months || || Connecticut |}
  2. 1860 Census: "United States, Census, 1860" citing Page: 24; Affiliate Name: The U.S. National Archives and Records Administration (NARA); Affiliate Publication Number: M653; Digital film/folder number: 005165660; FHL microfilm: 803089; Image number: 221; Record number: 8016; Packet letter: A; Indexing batch: N01693-0 (accessed 8 February 2026) Mary E Glascow (36) in Griswold, New London, Connecticut, United States. Born in Connecticut. {| border="1" cellpadding="4" |+ 1860 United States Federal Census: Griswold, New London, Connecticut |- bgcolor=#E1F0B4 | Name || Sex || Age || Occupation || Birth Place |- | Isaac M Glascow || M || 47 || || Connecticut |- | Mary E Glascow || F || 36 || || Connecticut |- | Charles F Glascow || M || 12 || || Connecticut |- | William A Glascow || M || 10 || || Connecticut |- | George A Glascow || M || 8 || || Connecticut |- | Ellen M Glascow || F || 4 || || Connecticut |- | James A Glascow || M || || || Connecticut |- | Mary J James || F || 21 || || Connecticut |}
  3. 1870 Census: "United States, Census, 1870" citing Page: 82; Affiliate Name: The U.S. National Archives and Records Administration (NARA); Affiliate Publication Number: M593; Line: 11; Digital film/folder number: 004263328; FHL microfilm: 000545613; Image number: 624; Record number: 24702; Packet letter: A; Indexing batch: N01469-0 (accessed 8 February 2026) Mary E Glassgow (46) in Sprague, New London, Connecticut, United States. Born in Connecticut. {| border="1" cellpadding="4" |+ 1870 United States Federal Census: Sprague, New London, Connecticut |- bgcolor=#E1F0B4 | Name || Sex || Age || Occupation || Birth Place |- | Isaac Glassgow || M || 56 || || Connecticut |- | Mary E Glassgow || F || 46 || || Connecticut |- | Charles F Glassgow || M || 22 || || Connecticut |- | George Glassgow || M || 19 || || Connecticut |- | Mary E Glassgow || F || 14 || || Connecticut |- | James A Glassgow || M || 10 || || Connecticut |- | Walter P Glassgow || M || 4 || || Connecticut |}
  4. "United States Census, 1850," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:M68T-KC1: 19 December 2020), Mary E Glasko in household of Isaac M Glasko, Griswold, New London, Connecticut, United States; NARA microfilm publication (Washington, D.C.: National Archives and Records Administration, n.d.). source link 1
  5. "United States Census, 1860", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MHRW-RVR: 18 February 2021), Mary E Glascow in entry for Isaac M Glascow, 1860. source link 1
  6. "United States Census, 1870", database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MN7G-3RD: 28 May 2021), Mary E Glassgow in entry for Isaac Glassgow, 1870. source link 1
  7. "United States Census, 1880," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MFZ9-PW2: 13 January 2022), Mary Glasgow, Sprague, New London, Connecticut, United States; citing enumeration district , sheet , NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm source link 1
Full captured biography text
Biography
Mary E. Billings was born about 1823, and died on April 2, 1893. 

Mary was born in Connecticut around 1823. She married Isaac Glasgow. 
Children:
# Lucy Glasgow (1847-)
# Charles 1848
# William 1850
# George 1852
# Ellen 1856
# James A Glasgow (1860-)
# Walter 1866
Census Records
In the 1850 census Mary (age 25) was in Griswold, New London, Connecticut, United States. 
1850 Census:
"United States, Census, 1850" 
citing Affiliate Name: The U.S. National Archives and Records Administration (NARA); Affiliate Publication Number: M432; Affiliate Film Number: 49; Line: 3; Digital film/folder number: 004181039; FHL microfilm: 442881; Image number: 245; Record number: 9971; Packet letter: A; Indexing batch: N00957-9 
 (accessed 8 February 2026) 
 
Mary E Glassko (25) in Griswold, New London, Connecticut, United States. Born in Connecticut.
{| border="1" cellpadding="4"
|+ 1850 United States Federal Census: Griswold, New London, Connecticut
|- bgcolor=#E1F0B4
| Name || Sex || Age || Occupation || Birth Place
|-
| Isaac M Glassko || M || 36 || || Connecticut
|-
| Mary E Glassko || F || 25 || || Connecticut
|-
| Lucy E Glassko || F || 5 || || Connecticut
|-
| Charles F Glassko || M || 2 || || Connecticut
|-
| William A Glassko || M || 8 months || || Connecticut
|}

In the 1860 census Mary (age 36) was in Griswold, New London, Connecticut, United States. 
1860 Census:
"United States, Census, 1860" 
citing Page: 24; Affiliate Name: The U.S. National Archives and Records Administration (NARA); Affiliate Publication Number: M653; Digital film/folder number: 005165660; FHL microfilm: 803089; Image number: 221; Record number: 8016; Packet letter: A; Indexing batch: N01693-0 
 (accessed 8 February 2026) 
 
Mary E Glascow (36) in Griswold, New London, Connecticut, United States. Born in Connecticut.
{| border="1" cellpadding="4"
|+ 1860 United States Federal Census: Griswold, New London, Connecticut
|- bgcolor=#E1F0B4
| Name || Sex || Age || Occupation || Birth Place
|-
| Isaac M Glascow || M || 47 || || Connecticut
|-
| Mary E Glascow || F || 36 || || Connecticut
|-
| Charles F Glascow || M || 12 || || Connecticut
|-
| William A Glascow || M || 10 || || Connecticut
|-
| George A Glascow || M || 8 || || Connecticut
|-
| Ellen M Glascow || F || 4 || || Connecticut
|-
| James A Glascow || M || || || Connecticut
|-
| Mary J James || F || 21 || || Connecticut
|}

In the 1870 census Mary (age 46) was in Sprague, New London, Connecticut, United States. 
1870 Census:
"United States, Census, 1870" 
citing Page: 82; Affiliate Name: The U.S. National Archives and Records Administration (NARA); Affiliate Publication Number: M593; Line: 11; Digital film/folder number: 004263328; FHL microfilm: 000545613; Image number: 624; Record number: 24702; Packet letter: A; Indexing batch: N01469-0 
 (accessed 8 February 2026) 
 
Mary E Glassgow (46) in Sprague, New London, Connecticut, United States. Born in Connecticut.
{| border="1" cellpadding="4"
|+ 1870 United States Federal Census: Sprague, New London, Connecticut
|- bgcolor=#E1F0B4
| Name || Sex || Age || Occupation || Birth Place
|-
| Isaac Glassgow || M || 56 || || Connecticut
|-
| Mary E Glassgow || F || 46 || || Connecticut
|-
| Charles F Glassgow || M || 22 || || Connecticut
|-
| George Glassgow || M || 19 || || Connecticut
|-
| Mary E Glassgow || F || 14 || || Connecticut
|-
| James A Glassgow || M || 10 || || Connecticut
|-
| Walter P Glassgow || M || 4 || || Connecticut
|}
Sources
* "United States Census, 1850," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:M68T-KC1: 19 December 2020), Mary E Glasko in household of Isaac M Glasko, Griswold, New London, Connecticut, United States; NARA microfilm publication (Washington, D.C.: National Archives and Records Administration, n.d.).

* "United States Census, 1860", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MHRW-RVR: 18 February 2021), Mary E Glascow in entry for Isaac M Glascow, 1860.

* "United States Census, 1870", database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MN7G-3RD: 28 May 2021), Mary E Glassgow in entry for Isaac Glassgow, 1870.

* "United States Census, 1880," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MFZ9-PW2: 13 January 2022), Mary Glasgow, Sprague, New London, Connecticut, United States; citing enumeration district , sheet , NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm
Raw WikiTree biography markup
[[Category:USBH Free People of Color, Linked]]
[[Category:Connecticut, Free People of Color]]
== Biography == 
{{African-American Sticker}}

Mary E. Billings was born about 1823, and died on April 2, 1893. 

Mary was born in Connecticut around 1823. She married Isaac Glasgow. 
Children:
# [[Glasgow-3794|Lucy Glasgow (1847-)]]
# Charles 1848
# William 1850
# George 1852
# Ellen 1856
# [[Glasgow-3792|James A Glasgow (1860-)]]
# Walter 1866

=== Census  Records ===
In the 1850 census Mary (age 25) was in Griswold, New London, Connecticut, United States.<ref>
'''1850 Census''':
"United States, Census, 1850"<br/>
citing Affiliate Name: The U.S. National Archives and Records Administration (NARA); Affiliate Publication Number: M432; Affiliate Film Number: 49; Line: 3; Digital film/folder number: 004181039; FHL microfilm: 442881; Image number: 245; Record number: 9971; Packet letter: A; Indexing batch: N00957-9<br/>
{{FamilySearch Record|M68T-KC1}} (accessed 8 February 2026)<br/>
{{FamilySearch Image|S3HY-67ZS-5NY}}<br/>
Mary E Glassko (25) in Griswold, New London, Connecticut, United States. Born in Connecticut.
{| border="1" cellpadding="4"
|+ 1850 United States Federal Census: Griswold, New London, Connecticut
|- bgcolor=#E1F0B4
| Name || Sex || Age || Occupation || Birth Place
|-
| Isaac M Glassko || M || 36 ||  || Connecticut
|-
| '''Mary E Glassko''' || '''F''' || '''25''' ||  || '''Connecticut'''
|-
| Lucy E Glassko || F || 5 ||  || Connecticut
|-
| Charles F Glassko || M || 2 ||  || Connecticut
|-
| William A Glassko || M || 8 months ||  || Connecticut
|}
</ref>

In the 1860 census Mary (age 36) was in Griswold, New London, Connecticut, United States.<ref>
'''1860 Census''':
"United States, Census, 1860"<br/>
citing Page: 24; Affiliate Name: The U.S. National Archives and Records Administration (NARA); Affiliate Publication Number: M653; Digital film/folder number: 005165660; FHL microfilm: 803089; Image number: 221; Record number: 8016; Packet letter: A; Indexing batch: N01693-0<br/>
{{FamilySearch Record|MHRW-RVR}} (accessed 8 February 2026)<br/>
{{FamilySearch Image|33S7-9YBV-9P3R}}<br/>
Mary E Glascow (36) in Griswold, New London, Connecticut, United States. Born in Connecticut.
{| border="1" cellpadding="4"
|+ 1860 United States Federal Census: Griswold, New London, Connecticut
|- bgcolor=#E1F0B4
| Name || Sex || Age || Occupation || Birth Place
|-
| Isaac M Glascow || M || 47 ||  || Connecticut
|-
| '''Mary E Glascow''' || '''F''' || '''36''' ||  || '''Connecticut'''
|-
| Charles F Glascow || M || 12 ||  || Connecticut
|-
| William A Glascow || M || 10 ||  || Connecticut
|-
| George A Glascow || M || 8 ||  || Connecticut
|-
| Ellen M Glascow || F || 4 ||  || Connecticut
|-
| James A Glascow || M ||  ||  || Connecticut
|-
| Mary J James || F || 21 ||  || Connecticut
|}
</ref>

In the 1870 census Mary (age 46) was in Sprague, New London, Connecticut, United States.<ref>
'''1870 Census''':
"United States, Census, 1870"<br/>
citing Page: 82; Affiliate Name: The U.S. National Archives and Records Administration (NARA); Affiliate Publication Number: M593; Line: 11; Digital film/folder number: 004263328; FHL microfilm: 000545613; Image number: 624; Record number: 24702; Packet letter: A; Indexing batch: N01469-0<br/>
{{FamilySearch Record|MN7G-3RD}} (accessed 8 February 2026)<br/>
{{FamilySearch Image|S3HY-6GBW-VY3}}<br/>
Mary E Glassgow (46) in Sprague, New London, Connecticut, United States. Born in Connecticut.
{| border="1" cellpadding="4"
|+ 1870 United States Federal Census: Sprague, New London, Connecticut
|- bgcolor=#E1F0B4
| Name || Sex || Age || Occupation || Birth Place
|-
| Isaac Glassgow || M || 56 ||  || Connecticut
|-
| '''Mary E Glassgow''' || '''F''' || '''46''' ||  || '''Connecticut'''
|-
| Charles F Glassgow || M || 22 ||  || Connecticut
|-
| George Glassgow || M || 19 ||  || Connecticut
|-
| Mary E Glassgow || F || 14 ||  || Connecticut
|-
| James A Glassgow || M || 10 ||  || Connecticut
|-
| Walter P Glassgow || M || 4 ||  || Connecticut
|}
</ref>
== Sources ==
<references />
* "United States Census, 1850," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:M68T-KC1: 19 December 2020), Mary E Glasko in household of Isaac M Glasko, Griswold, New London, Connecticut, United States; NARA microfilm publication (Washington, D.C.: National Archives and Records Administration, n.d.).

* "United States Census, 1860", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MHRW-RVR: 18 February 2021), Mary E Glascow in entry for Isaac M Glascow, 1860.

* "United States Census, 1870", database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MN7G-3RD: 28 May 2021), Mary E Glassgow in entry for Isaac Glassgow, 1870.

* "United States Census, 1880," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MFZ9-PW2: 13 January 2022), Mary Glasgow, Sprague, New London, Connecticut, United States; citing enumeration district , sheet , NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm