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Lady Mary O'Brien

(died 1686)
Person human Q75278604
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Lady Mary O'Brien

Summary

Lady Mary O'Brien is a human[1]. She died on +1686-01-01T00:00:00Z[2].

Key Facts

  • Lady Mary O'Brien died on +1686-01-01T00:00:00Z[2].
  • Lady Mary O'Brien's father was Henry O'Brien, 5th Earl of Thomond[3].
  • Lady Mary O'Brien's mother was Mary Brereton[4].
  • Lady Mary O'Brien was married to Charles Cokayne, 1st Viscount Cullen[5].
  • Lady Mary O'Brien was married to George Blount[6].
  • A child of Lady Mary O'Brien was William Cokayne[7].
  • A child of Lady Mary O'Brien was Charles Cokayne[8].
  • A child of Lady Mary O'Brien was Mary Cokayne[9].
  • A child of Lady Mary O'Brien was Brien Cokayne, 2nd Viscount Cullen[10].
  • Lady Mary O'Brien is recorded as female[11].
  • Lady Mary O'Brien's instance of is recorded as human[12].
  • Lady Mary O'Brien's family name is recorded as O'Brien[13].
  • Lady Mary O'Brien's given name is recorded as Mary[14].
  • Lady Mary O'Brien's genealogics.org person ID is recorded as I00221752[15].
  • Lady Mary O'Brien's Geni.com profile ID is recorded as 6000000019990707086[16].
  • Lady Mary O'Brien's WikiTree person ID is recorded as O'Brien-3235[17].
  • Lady Mary O'Brien's The Peerage person ID is recorded as p3310.htm#i33096[18].
  • Lady Mary O'Brien's Roglo person ID is recorded as p=mary;n=o+brien;oc=26[19].
  • Lady Mary O'Brien's Roglo person ID is recorded as p=mary;n=o+brien;oc=15[20].

Body

Origins and Family

Lady Mary O'Brien's father was Henry O'Brien, 5th Earl of Thomond[3]. Her mother was Mary Brereton[4].

Personal Life

Spouses include Charles Cokayne, 1st Viscount Cullen[5], a politician[21], 1602–1661[22] and George Blount[6], 1650–1702[23]. Children include William Cokayne[7]; Charles Cokayne[8]; Mary Cokayne[9]; and Brien Cokayne, 2nd Viscount Cullen[10], 1631–1687[24].

Death and Burial

Lady Mary O'Brien died on +1686-01-01T00:00:00Z[2].

FAQs

Who were Lady Mary O'Brien's parents?

Lady Mary O'Brien's father was Henry O'Brien, 5th Earl of Thomond[3]. Lady Mary O'Brien's mother was Mary Brereton[4].

Who was Lady Mary O'Brien married to?

Lady Mary O'Brien's spouses include Charles Cokayne, 1st Viscount Cullen[5] and George Blount[6].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [11] ↑ . The Peerage. wikidata.org.
  2. [3] ↑ . The Peerage. wikidata.org.
  3. [4] ↑ . The Peerage. wikidata.org.
  4. [5] ↑ . Retrieved . wikidata.org.
  5. [6] ↑ . Retrieved . wikidata.org.
  6. [12] ↑ . wikidata.org.
  7. [7] ↑ . The Peerage. wikidata.org.
  8. [8] ↑ . The Peerage. wikidata.org.
  9. [9] ↑ . The Peerage. wikidata.org.
  10. [10] ↑ . The Peerage. wikidata.org.
  11. [2] ↑ . The Peerage. wikidata.org.
  12. [13] ↑ . wikidata.org.
  13. [14] ↑ . wikidata.org.
  14. [15] ↑ . wikidata.org.
  15. [16] ↑ . wikidata.org.
  16. [17] ↑ . wikidata.org.
  17. [18] ↑ . Retrieved . wikidata.org.
  18. [19] ↑ . wikidata.org.
  19. [20] ↑ . wikidata.org.

Inline context (facts about related entities)

  1. [21] ↑ . Wikidata. wikidata.org. → on this site
  2. [22] ↑ . Wikidata. wikidata.org. → on this site
  3. [23] ↑ . Wikidata. wikidata.org. → on this site
  4. [24] ↑ . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Lady Mary O'Brien. Retrieved May 3, 2026, from https://4ort.xyz/entity/lady-mary-o-brien-q75278604
MLA “Lady Mary O'Brien.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/lady-mary-o-brien-q75278604.
BibTeX @misc{4ortxyz_lady-mary-o-brien-q75278604_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Lady Mary O'Brien}}, year = {2026}, url = {https://4ort.xyz/entity/lady-mary-o-brien-q75278604}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Lady Mary O'Brien — https://4ort.xyz/entity/lady-mary-o-brien-q75278604 (retrieved 2026-05-03)

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