Background
He was the son of Eustace I, Count of Bologne and of Maud de Leuven (daughter of Lambert I of Leuven).
He was the son of Eustace I, Count of Bologne and of Maud de Leuven (daughter of Lambert I of Leuven).
Adelaide was the widow of Enguerrand II, Count of Ponthieu who died in 1053. c. 1054 Lambert and Adelaide had a daughter, Judith of Lens, although Lambert would scarcely have seen her. He was killed at the battle of Lille in 1054. Lambert was supporting Baldwin V, Count of Flanders against Henry III, Holy Roman Emperor when he was killed in battle.
His widow, Adelaide, married thirdly, Odo, Count of Champagne.