Commentary
Cawley: "His parentage is confirmed by the charter dated 7 Oct 1234 which records payment of a fine by his son "Richard de Burgh" for return of land in Connaught which had been confiscated from him "the strife with Hubert de Burgh Earl of Kent his uncle"["
Family
ClaimDetailEvidence
Spouse_____ O’Brien (e1171-) 
Child +Richard de Burgh, Lord of Connaught (~1200-1242) [S756] [S1006] [S1522]
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Attributes
ClaimDetailEvidence
GenderMale
NameWilliam de Burgh , Lord of Connaught [S954] [S1006] [S1522]
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NameWilliam de Burgh [S756]
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TitleLord of Connaught [S756] [S1522]
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Timeline
ClaimDateDetailAgeEvidence
Birthabt 1170Ireland [S1522]
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Death1205 [S756]
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Death1205/06 [S954] [S1522]
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Sources
IndexTitle
[S756] Weis, Frederick Lewis, "Ancestral Roots of Sixty Colonists Who Came To New England before 1700, 7th Ed." (Genealogical Publishing Co., Inc., Baltimore, 1999).
[S954] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - England Earls 1067-1122)" (2006-7 (v1.1 Updated 23 April 2007)).
[S1006] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - Ireland)" (v4.0 Updated 13 October 2019) (https://fmg.ac/Projects/MedLands/IRELAND.htm).
[S1522] Richardson, Douglas, "Medieval Genealogy Newsgroup: Juliane Fitz Maurice, wife of Thomas de Clare" (25 Feb 2000) (http://archiver.rootsweb.ancestry.com/th/read/gen-medieval/2000-02/0951494078).