Glasgow Surname Project

Individual research record

John Glasgow

c. 1750 – ?

Glasgow-2990 · 1 mapped association

Derryloran, Cookstown, County Tyrone, Ireland→Death place unknown
View on mapOpen WikiTreeCompareReport a correction

At a glance

Identity & family

Tree links organise the family; documentary status still varies.

1Mapped records
1Close relations
3Evidence items
12Candidate leads
Birth
c. 1750 · Derryloran, Cookstown, County Tyrone, Ireland
Death
Not recorded · Place not recorded
Parents
James Glasgowuncertain
Spouses
Not recorded
Children
Not recorded
Gender
Male
WikiTree
Glasgow-2990
Research clusters
Descendants of James Glasgow (c.1700)
Mapped descendants
0

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 positionNot identifiable from dated child profiles
Maternal grandfather positionNot identifiable from dated child profiles
Maternal grandmother positionNot identifiable from dated child profiles
Paternal grandmother positionNot identifiable from dated child profiles

Known-position checks: 0 support · 0 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 named children are recoverable, so child-naming analysis cannot be run.

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.

Same-name candidate

John GlasgowGlasgow-2980

Automated fit48/100
Similar Person
Dates1750–?PlacesMid Calder, Midlothian, ScotlandParent comparisonNo shared parent is indexed
Why it may fit
  • same first and last name (+18)
  • same birth year (+30)

uncertain father attachments differ (no deduction)

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

Conflicts: uncertain father attachments differ (no deduction)

Open side-by-side comparison

Same-name candidate

John GlasgowGlasgow-1022

Automated fit43/100
Similar Person
Dates1751–1852PlacesCounty Antrim, Ireland → County Antrim, Ireland, United KingdomParent comparisonNo shared parent is indexed
Why it may fit
  • same first and last name (+18)
  • birth years within 1 (+25)

uncertain father attachments differ (no deduction)

Full comparison detail
  • same first and last name (+18)
  • birth years within 1 (+25)

Conflicts: uncertain father attachments differ (no deduction)

Open side-by-side comparison
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

Latest case researchThe current conclusion from the durable research case file.Updated

Current conclusion

Glasgow-2990

John's 1766 householder occurrence is now confirmed from the original return. He was enumerated at Drumearn, immediately after the second of two James Glasco entries there. The order supports a household-neighbourhood cluster but does not state that either James, or either William in 1740, was his father.

Life and record timelineChronological mapped occurrences and their underlying sources.1 record
c.1750

Profile-stated birth: Derryloran, Cookstown, County Tyrone, Ireland.

Derryloran civil parish

One-Tree export profile fields are search leads, not sources. Attached parent profile(s): Glasgow-2988.

One-Tree profile leadunknown
Source and mapping detail

WikiTree profile export for Glasgow-2990

No sufficiently specific citation match found.

Precision: Civil-parish representative point

Case-file source findingsSource extracts and analysis regenerated from findings.md.1 section(s)

Source findings

Glasgow-2990

SourceFindingAssessment
National Archives of Ireland `IHP/1/665`, original 1766 Derryloran returnThe Drumearn section names Jams Glasco twice and then John Glasco.Direct evidence for John's residence and same-townland Glasgow cluster; no relationship is stated.
1740 Ulster religious return, PDF p. 119Two William, two James Glasgow households at Derryloran.Direct cluster evidence; no child John named.
National Archives of Ireland, 1766 religious census overviewThe returns concern householders by religion.A John occurrence would not itself identify his father.
Virtual Record Treasury exact-surname result, local preservationPreserves the original-return metadata and complete surrounding OCR sequence; PRONI T808/15264 independently gives Jas Glasgo, Jas Glasgo, Jn Glasgo at Drumearn.Independent transcription corroborates the original's name sequence.
Evidence assessmentWhat is supported, uncertain or disputed in the current case model.3 claims
1Derivative
1Original
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.4 open

Which records prove the subject's identity across events?

No current conclusion recorded.

Missing bridge: Not specified

Which original or indexed records identify the parents?

No current conclusion recorded.

Missing bridge: A contemporary record explicitly identifying the parent or parents.

Which spouses and children are directly supported by records?

No current conclusion recorded.

Missing bridge: Not specified

What conflicts or same-name conflations must be resolved?

No current conclusion recorded.

Missing bridge: Not specified

Sources and provenanceStructured citations and source-quality classifications.3 sources

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

  1. original National Archives of Ireland, Parliamentary Return 665, 1766 religious census for Derryloran, `IHP/1/665`, original return and transcription (https://virtualtreasury.ie/item/NAI-IHP-1-665), accessed 17 July 2026; independently transcribed in PRONI `T808/15264`.
  2. derivative 1740 Religious Returns, Ulster surname transcription (https://www.billmacafee.com/1740returns/1740religiousreturnsulstername.pdf), p. 119.
  3. tree_only WikiTree profile export for Glasgow-2990
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

Glasgow-2990 was captured 2026-08-19T15:04:19+00:00; WikiTree profile revision 2026-08-19.

Profile location claims

EventDateLocationStatus
birth—Derryloran, Cookstown, County Tyrone, Ireland.WikiTree profile field

Immediate relationship snapshot

RelationshipPersonWikiTree IDDates and places returned
ParentsJames GlasgowGlasgow-29881720-00-00 · Derryloran, Cookstown, County Tyrone, Ireland · 0000-00-00
SiblingsJames GlasgowGlasgow-29891740-00-00 · Derryloran, Cookstown, County Tyrone, Ireland · 0000-00-00

Record-bearing passages

  • Biography John Glasgow appears in the original 1766 religious census return for Derryloran, County Tyrone. In the Drumearn section he is enumerated as John Glasco, immediately after two separate entries for Jams Glasco. National Archives of Ireland, Parliamentary Return 665, 1766 religious census for Derryloran, `IHP/1/665`, original return and transcription (https://virtualtreasury.ie/item/NAI-IHP-1-665), accessed 17 July 2026; independently transcribed in PRONI `T808/15264`.
  • The return concerns householders by religion. It confirms John's residence at Drumearn and places him in a local Glasgow cluster, but gives no age or family relationship. The order of the entries does not establish that either James was his father or brother.

  • John Glasgow may be connected to John Glasgow (abt.1738-), though further research is needed to confirm a relationship. Research Notes

    • The 1740 Ulster religious return lists two William and two James Glasgow households at Derryloran, but does not name a child John or state any relationships. 1740 Religious Returns, Ulster surname transcription (https://www.billmacafee.com/1740returns/1740religiousreturnsulstername.pdf), p. 119. Shared parish and suitable chronology do not identify either William as John's father.
    • The two 1766 James entries and John's adjacent entry support a same-townland cluster only. Their relationships remain unproved. Sources

Profile source citations

  1. National Archives of Ireland, Parliamentary Return 665, 1766 religious census for Derryloran, `IHP/1/665`, original return and transcription (https://virtualtreasury.ie/item/NAI-IHP-1-665), accessed 17 July 2026; independently transcribed in PRONI `T808/15264`. source link 1
  2. 1740 Religious Returns, Ulster surname transcription (https://www.billmacafee.com/1740returns/1740religiousreturnsulstername.pdf), p. 119. source link 1
Full captured biography text
Biography
John Glasgow appears in the original 1766 religious census return for Derryloran, County Tyrone. In the Drumearn section he is enumerated as John Glasco, immediately after two separate entries for Jams Glasco. National Archives of Ireland, Parliamentary Return 665, 1766 religious census for Derryloran, `IHP/1/665`, original return and transcription (https://virtualtreasury.ie/item/NAI-IHP-1-665), accessed 17 July 2026; independently transcribed in PRONI `T808/15264`. 

The return concerns householders by religion. It confirms John's residence at Drumearn and places him in a local Glasgow cluster, but gives no age or family relationship. The order of the entries does not establish that either James was his father or brother.

John Glasgow may be connected to John Glasgow (abt.1738-), though further research is needed to confirm a relationship.
Research Notes
* The 1740 Ulster religious return lists two William and two James Glasgow households at Derryloran, but does not name a child John or state any relationships. 1740 Religious Returns, Ulster surname transcription (https://www.billmacafee.com/1740returns/1740religiousreturnsulstername.pdf), p. 119. Shared parish and suitable chronology do not identify either William as John's father.
* The two 1766 James entries and John's adjacent entry support a same-townland cluster only. Their relationships remain unproved.
Sources
Raw WikiTree biography markup
== Biography ==
'''John Glasgow''' appears in the original 1766 religious census return for Derryloran, County Tyrone. In the Drumearn section he is enumerated as ''John Glasco'', immediately after two separate entries for ''Jams Glasco''.<ref>National Archives of Ireland, Parliamentary Return 665, 1766 religious census for Derryloran, `IHP/1/665`, [https://virtualtreasury.ie/item/NAI-IHP-1-665 original return and transcription], accessed 17 July 2026; independently transcribed in PRONI `T808/15264`.</ref>

The return concerns householders by religion. It confirms John's residence at Drumearn and places him in a local Glasgow cluster, but gives no age or family relationship. The order of the entries does not establish that either James was his father or brother.

John Glasgow may be connected to [[Glasgow-1343|John Glasgow (abt.1738-)]], though further research is needed to confirm a relationship.

== Research Notes ==

* The 1740 Ulster religious return lists two William and two James Glasgow households at Derryloran, but does not name a child John or state any relationships.<ref>[https://www.billmacafee.com/1740returns/1740religiousreturnsulstername.pdf 1740 Religious Returns, Ulster surname transcription], p. 119.</ref> Shared parish and suitable chronology do not identify either William as John's father.
* The two 1766 James entries and John's adjacent entry support a same-townland cluster only. Their relationships remain unproved.

== Sources ==
<references />