William O'Brien, 4th Earl of Inchiquin
type: Person
alternate name: William O'Brien, 9th Baron of Thomond, 4th Earl of Inchiquin
description: British earl and politician
birth date: 1700-00-00
death date: 1777-07-18
birth place: Ireland
parent: William O'Brien, 3rd Earl of Inchiquin
parent: Mary Villiers
spouse: Anne O'Brien, 2nd Countess of Orkney
spouse: Mary Moore
children: Mary O'Brien, 3rd Countess of Orkney
children: William O'Brien
children: George O'Brien
children: Augustus O'Brien
children: Murrough O'Brien
alumni of: Kilkenny College
has occupation: politician
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      monthly pageviews: 69
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  yearly pageviews: 135
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value: William_O'Brien_(23)
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value: p2004.htm#i20033
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value: p=william;n=o brien;oc=1
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source: Virtual International Authority File
stated in qid: Q54919
retrieved: 2017-11-10

source: SNAC
stated in qid: Q29861311
retrieved: 2017-10-09

source: The Peerage
stated in qid: Q21401824

wikidata id: Q8016216
domain: human
level: standard
html url: https://4ort.xyz/entity/william-o-brien-4th-earl-of-inchiquin
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facts url full: https://4ort.xyz/entity/william-o-brien-4th-earl-of-inchiquin/facts.json
data source: Wikidata (CC0 / public domain)
license: https://creativecommons.org/publicdomain/zero/1.0/
api version: v1
served at: 2026-08-01T03:10:05.338488Z
entity updated at: 2026-04-10T23:45:10.897368+00:00Z
entity created at: 2026-04-10T23:45:10.897368+00:00Z