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Mary O'Brien

Peerage person ID=483121
Person human Q76034219
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Key Facts

  • Father: Connor O'Brien, 3rd Earl of Thomond[1]
  • Mother: Una O'Brien[2]
  • Spouse: Turlough Roe MacMahon[3]
  • Child: Máire Rua O'Brien[4]
  • Sex or gender: female[5]
  • Family name: O'Brien[6]
  • Given name: Mary[7]
  • Sibling: Daniel O'Brien, 1st Viscount Clare[8], Donogh O'Brien, 4th Earl of Thomond[9], Margaret O'Brien[10], Lady Honor O'Brien[11], Teige O'Brien[12], Honora O'Brien[13]

FAQs

Who were Mary O'Brien's parents?

Mary O'Brien's father was Connor O'Brien, 3rd Earl of Thomond[1]. Mary O'Brien's mother was Una O'Brien[2].

Who was Mary O'Brien married to?

Mary O'Brien's spouses include Turlough Roe MacMahon[3].

References

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

Direct Wikidata claims

  1. [5] ↑ . The Peerage. wikidata.org.
  2. [1] ↑ . The Peerage. wikidata.org.
  3. [2] ↑ . The Peerage. wikidata.org.
  4. [3] ↑ . Retrieved . wikidata.org.
  5. [4] ↑ . wikidata.org.
  6. [6] ↑ . wikidata.org.
  7. [7] ↑ . wikidata.org.
  8. [8] ↑ . wikidata.org.
  9. [9] ↑ . wikidata.org.
  10. [10] ↑ . wikidata.org.
  11. [11] ↑ . wikidata.org.
  12. [12] ↑ . wikidata.org.
  13. [13] ↑ . 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). Mary O'Brien. Retrieved October 14, 2026, from https://4ort.xyz/entity/mary-o-brien-q76034219
MLA “Mary O'Brien.” 4ort.xyz Knowledge Graph, 4ort.xyz, 14 Oct. 2026, https://4ort.xyz/entity/mary-o-brien-q76034219.
BibTeX @misc{4ortxyz_mary-o-brien-q76034219_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Mary O'Brien}}, year = {2026}, url = {https://4ort.xyz/entity/mary-o-brien-q76034219}, note = {Accessed: 2026-10-14}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Mary O'Brien — https://4ort.xyz/entity/mary-o-brien-q76034219 (retrieved 2026-10-14)

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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 2d ago · Gamaliel · 2026-10-14 view diff on Wikidata ↗
    Sibling → Daniel O'Brien, 1st Viscount Clare, Donogh O'Brien, 4th Earl of Thomond, Margaret O'Brien +3
    Claims rich → —
    "/* wbeditentity-statements-single-property-add:1||6 */ Sibling, Adding statement(s) using [[:toollabs:wikidata-todo/relator2|Relator2]]"
  2. 12w ago · JhealdBatch bot · 2026-07-22 view diff on Wikidata ↗
    Child → Máire Rua O'Brien
    Spouse → Turlough Roe MacMahon
    Family name → O'Brien
    Roglo person id → p=mary;n=o+brien;oc=8
    + 10 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/42761|batch #42761]]: TP named as #17c"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.