Viscount of Avranches
Events
Date of Birth: unknown.
Place of Birth: unknown.
Date of Death: after 1082.
The date is given by Cawley.
Relationships
Father: Toustain Goz, viscount, son of Ansfrid.
This relationship is given by Cawley.
Mother: unknown.
Spouse: unknown.
Lewis (ODNB) notes that she was “formerly identified on the basis of unsatisfactory evidence as Emma, supposedly a half-sister of William the Conqueror.”
Children:
Hugh d’Avranches (died 27 July 1101), first earl of Chester, married Ermentrude, daughter of Hugh de Clermont.
Matilda married Ranulf de Briquessart, viscount of the Bessin.
Helisende married William, count of Eu.
Judith married Richer de l’Aigle.
References
Cawley, Charles. “Vicomtes d'Avranches” 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).
King, Edmund. “Ranulf (I), third earl of Chester (d. 1129)” in the Oxford Dictionary of National Biography (Oxford University Press, 2004).
Lewis, C.P. “Avranches, Hugh d’, first earl of Chester (d. 1101)” in the Oxford Dictionary of National Biography (Oxford University Press, 2004).