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William O'Brien, 2nd Marquess of Thomond

Irish Marquess
Person human Q8016215
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William O'Brien, 2nd Marquess of Thomond

Summary

William O'Brien, 2nd Marquess of Thomond is a human[1]. He was born on +1765-01-01T00:00:00Z[2]. He died on +1846-08-21T00:00:00Z[3]. He worked as a politician[4]. He ranks in the top 0.73% of human entities by monthly Wikipedia readership (2 views/month, #7,300 of 1,000,298).[5]

Key Facts

  • William O'Brien, 2nd Marquess of Thomond was born on +1765-01-01T00:00:00Z[2].
  • William O'Brien, 2nd Marquess of Thomond died on +1846-08-21T00:00:00Z[3].
  • William O'Brien, 2nd Marquess of Thomond's father was Edward Dominic O'Brien[6].
  • William O'Brien, 2nd Marquess of Thomond's mother was Mary Carrick[7].
  • Among William O'Brien, 2nd Marquess of Thomond's spouses was Elizabeth Trotter[8].
  • A child of William O'Brien, 2nd Marquess of Thomond was Lady Sarah O'Brien[9].
  • A child of William O'Brien, 2nd Marquess of Thomond was Lady Mary O'Brien[10].
  • A child of William O'Brien, 2nd Marquess of Thomond was Lady Elisabeth O'Brien[11].
  • A child of William O'Brien, 2nd Marquess of Thomond was Lady Susan Maria O'Brien[12].
  • William O'Brien, 2nd Marquess of Thomond worked as a politician[4].
  • William O'Brien, 2nd Marquess of Thomond held the position of Member of the Privy Council of Ireland[13].
  • William O'Brien, 2nd Marquess of Thomond held the position of member of the House of Lords[14].
  • William O'Brien, 2nd Marquess of Thomond's image is recorded as William O'Brien, 2nd Marquess of Thomond.jpg[15].
  • William O'Brien, 2nd Marquess of Thomond is recorded as male[16].
  • William O'Brien, 2nd Marquess of Thomond's instance of is recorded as human[17].
  • William O'Brien, 2nd Marquess of Thomond's noble title is recorded as Baron Tadcaster[18].
  • William O'Brien, 2nd Marquess of Thomond's Commons category is recorded as William O'Brien, 2nd Marquess of Thomond[19].
  • William O'Brien, 2nd Marquess of Thomond's Freebase ID is recorded as /m/0520k3c[20].
  • William O'Brien, 2nd Marquess of Thomond's family name is recorded as O'Brien[21].
  • William O'Brien, 2nd Marquess of Thomond's given name is recorded as William[22].
  • William O'Brien, 2nd Marquess of Thomond's British Museum person or institution ID is recorded as 173953[23].
  • William O'Brien, 2nd Marquess of Thomond's National Portrait Gallery is recorded as mp126205[24].
  • William O'Brien, 2nd Marquess of Thomond's Hansard is recorded as mr-william-obryen[25].
  • William O'Brien, 2nd Marquess of Thomond's Geni.com profile ID is recorded as 6000000017196306350[26].
  • William O'Brien, 2nd Marquess of Thomond's WikiTree person ID is recorded as O'Brien-2638[27].

Body

Origins and Family

William O'Brien, 2nd Marquess of Thomond was born on +1765-01-01T00:00:00Z[2]. His father was Edward Dominic O'Brien[6]. His mother was Mary Carrick[7].

Career and Affiliations

William O'Brien, 2nd Marquess of Thomond's professions included politician[4]. Positions held include Member of the Privy Council of Ireland[13] and member of the House of Lords[14], a position[28], in United Kingdom[29], founded in 1801[30].

Personal Life

Among William O'Brien, 2nd Marquess of Thomond's spouses was Elizabeth Trotter[8]. Children include Lady Sarah O'Brien[9]; Lady Mary O'Brien[10], 1801–1853[31]; Lady Elisabeth O'Brien[11]; and Lady Susan Maria O'Brien[12].

Death and Burial

William O'Brien, 2nd Marquess of Thomond died on +1846-08-21T00:00:00Z[3].

Why It Matters

William O'Brien, 2nd Marquess of Thomond ranks in the top 0.73% of human entities by monthly Wikipedia readership (2 views/month, #7,300 of 1,000,298).[5]

FAQs

Who were William O'Brien, 2nd Marquess of Thomond's parents?

William O'Brien, 2nd Marquess of Thomond's father was Edward Dominic O'Brien[6]. William O'Brien, 2nd Marquess of Thomond's mother was Mary Carrick[7].

Who was William O'Brien, 2nd Marquess of Thomond married to?

William O'Brien, 2nd Marquess of Thomond's spouses include Elizabeth Trotter[8].

What did William O'Brien, 2nd Marquess of Thomond do for work?

William O'Brien, 2nd Marquess of Thomond worked as politician[4].

References

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

Direct Wikidata claims

  1. [15] ↑ . wikidata.org.
  2. [16] ↑ . The Peerage. wikidata.org.
  3. [6] ↑ . The Peerage. wikidata.org.
  4. [7] ↑ . The Peerage. wikidata.org.
  5. [8] ↑ . Retrieved . wikidata.org.
  6. [17] ↑ . wikidata.org.
  7. [13] ↑ . wikidata.org.
  8. [14] ↑ . wikidata.org.
  9. [9] ↑ . The Peerage. wikidata.org.
  10. [10] ↑ . The Peerage. wikidata.org.
  11. [11] ↑ . The Peerage. wikidata.org.
  12. [12] ↑ . The Peerage. wikidata.org.
  13. [18] ↑ . wikidata.org.
  14. [4] ↑ . Hansard 1803–2005. Retrieved . wikidata.org.
  15. [19] ↑ . wikidata.org.
  16. [2] ↑ . British Museum person-institution thesaurus. Retrieved . wikidata.org.
  17. [3] ↑ . The Peerage. wikidata.org.
  18. [20] ↑ . wikidata.org.
  19. [21] ↑ . wikidata.org.
  20. [22] ↑ . wikidata.org.
  21. [23] ↑ . wikidata.org.
  22. [24] ↑ . wikidata.org.
  23. [25] ↑ . wikidata.org.
  24. [26] ↑ . wikidata.org.
  25. [27] ↑ . wikidata.org.

Inline context (facts about related entities)

  1. [28] ↑ . Wikidata. wikidata.org. → on this site
  2. [29] ↑ . Wikidata. wikidata.org. → on this site
  3. [30] ↑ . Wikidata. wikidata.org. → on this site
  4. [31] ↑ . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [5] ↑ . Wikimedia Foundation. dumps.wikimedia.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). William O'Brien, 2nd Marquess of Thomond. Retrieved May 3, 2026, from https://4ort.xyz/entity/william-o-brien-2nd-marquess-of-thomond
MLA “William O'Brien, 2nd Marquess of Thomond.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/william-o-brien-2nd-marquess-of-thomond.
BibTeX @misc{4ortxyz_william-o-brien-2nd-marquess-of-thomond_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{William O'Brien, 2nd Marquess of Thomond}}, year = {2026}, url = {https://4ort.xyz/entity/william-o-brien-2nd-marquess-of-thomond}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): William O'Brien, 2nd Marquess of Thomond — https://4ort.xyz/entity/william-o-brien-2nd-marquess-of-thomond (retrieved 2026-05-03)

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