Events
Date of Birth: unknown.
Place of Birth: unknown.
Date of Death: July or August 1054.
Place of Death: the siege of Lille.
The date and place are given by Thompson (p. 69).
Relationships
Father: Eustace I, count of Boulogne.
This relationship is given by père Anselme (6:248) and by Murray (p. 28).
Mother: Matilda of Louvain.
This relationship is given by père Anselme (6:248) (and by Tanner, adjusting for the error explained below).
Spouse: Adelais of Normandy.
This relationship is given by Baldwin and by Tanner.
Children:
Judith (1054 - after 1086) married Waltheof, earl of Huntingdon.
Commentary
Tanner inserts an extra generation here, giving Lambert a father also named Lambert, but Peter Stewart in a 2017 post to soc.genealogy.medieval explains that this is an error.
References
Anselme de Sainte-Marie. Histoire Généalogique et Chronologique de la Maison Royale de France, des Pairs, Grands Officiers de la Couronne, de la Maison du Roy et des Anciens Barons du Royaume. 9 Volumes (Paris: 1726-1733).
Baldwin, Stewart. “Robert I "le Magnifique" ("the Magnificent")” in The Henry Project. (2004).
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)
Murray, Alan V. The Crusader Kingdom of Jerusalem: A Dynastic History. (Prosopographica et Genealogica: 2000).
Tanner, Heather J. Families, Friends, and Allies: Boulogne and Politics in Northern France and England c. 879 - 1160. (Brill: 2004).
Thompson, Kathleen. “Being the Ducal Sister: The Role of Adelaide of Aumale” in Normandy and Its Neighbours: 900 to 1250 (Belgium: Brepols, 2011) pp. 61-76.