Events
Date of Birth: unknown.
Place of Birth: unknown.
Date of Death: a few years after 1144.
The Complete Peerage (5:120) states that he was slain at the siege of Burwell Castle in August, 1144, but Keats-Rohan (p. 681) cites “a charter of St Neots which shows that William de Say survived his brother-in-law Geoffrey de Mandeville ‘by a few years’”.
Relationships
Father: unknown.
Mother: unknown.
Spouse: Beatrice de Mandeville (died 19 April, in or before 1197).
This relationship is given in the Complete Peerage (5:120).
Children:
William de Say (died shortly before 1 August 1177).
Geoffrey de Say (died shortly before 19 May 1214) married (1) Alice, daughter of John de Chesney and widow of Hugh de Periers; married (2) Alice de Ver.
References
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) Volume 5.
Keats-Rohan, Katharine S. B. Domesday Descendants: A Prosopography of Persons Occurring in English Documents 1106 - 1166. (Woodbridge: 2002).