Events
Date of Birth: 23 November, about 1112.
The Complete Peerage (5:688) gives 23 November as William’s birth date. Cawley estimates the year as 1112.
Date of Death: 23 November 1183
The date is given by Patterson (ODNB) and by the Complete Peerage (5:688).
Place of Burial: Keynsham Abbey.
This place is given by Patterson (ODNB) and by the Complete Peerage (5:688).
Relationships
Father: Robert, first earl of Gloucester.
This relationship is given by Patterson (ODNB), by Keats-Rohan (p. 231, p. 232), and by the Complete Peerage (5:687).
Mother: Mabel (died 1157), daughter of Robert fitz Haimon
This relationship is given by Patterson (ODNB), by Keats-Rohan (p. 231), and by the Complete Peerage (5:687).
Spouse: Hawise, daughter of Robert de Beaumont, earl of Leicester.
This relationship is given by Patterson (ODNB), by Keats-Rohan (p. 231), and by the Complete Peerage (5:688).
Children:
(Complete source information for the children on this page is currently outside the scope of this project. Most information below comes from Cawley.)
Robert (died 1166).
Mabel (died 1198) married Amaury de Montfort, count of Évreux.
Amicia (died 1 January 1224/5) married Richard de Clare, earl of Hertford.
Isabel (died 1217) married (1) John, son of Henry II of England; married (2) Geoffrey de Mandeville, earl of Essex; married (3) Hubert de Burgh.
References
Cawley, Charles. “William FitzRobert” in Medieval Lands: A prosopography of medieval European noble and royal families.
Cokayne, George Edward, and Vicary Gibbs; et al. The complete peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, extant, extinct, or dormant [2nd ed.]. (London: St. Catherine Press, 1910-59).
Keats-Rohan, Katharine S. B. Domesday Descendants: A Prosopography of Persons Occurring in English Documents 1106 - 1166. (Woodbridge: 2002).
Patterson, Robert B. “William, second earl of Gloucester (d. 1183)” in the Oxford Dictionary of National Biography (Oxford University Press: 2004; online edn, January 2008)