Events
Date of Birth: unknown.
Place of Birth: unknown.
Date of Death: 19 April, in or before 1197.
(probable) Place of Death: Rickling, Essex.
The date and place are given in the Complete Peerage (5:122).
Place of Burial: Walden Abbey.
The place is given in the Complete Peerage (5:122).
Relationships
Father: William de Mandeville (died in or just before 1130).
This relationship is given in the Complete Peerage (5:chart after p. 116, 5:120).
Mother: Margaret, daughter of Eudo dapifer.
This relationship is given by Keats-Rohan. This relationship is discussed in a 2016 thread on soc.genealogy.medieval.
Spouse: Hugh Talebot. (Later divorced.)
This relationship is given in the Complete Peerage (5:120).
Spouse: William de Say.
This relationship is given in the Complete Peerage (5:120).
Children (by William):
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, K.S.B. Domesday Descendants: Some Corrigenda.