The Vita Sanctæ Gudilæ records that "Lambertus…comes" succeeded his brother Henri. The Genealogica comitum Buloniensium records that "Henricum seniorem de Bursella" was father of "Lambertum comitem et Henricum fratrem eius et Mathildem sororem eorum", but this appears to be a confused representation of the situation.
He succeeded his brother in 1038 as LAMBERT [II] Comte de Louvain, after depriving his nephew of his rights: the Chronicon Sigeberti records the death in 1038 of "Henricus Lovaniensis Comes" and the succession of "filius eius Otho" who was deprived by "patruus eius Baldricus qui et Lambertus".
The Chronicon Brabanti also refers to the two names of Lambert when recording the death of "Lambertus II qui et Baldricus dictus Cum-Barba", although it is unclear how reliable this is as "cum-barba" is the nickname applied in other sources to Comte Lambert [I]. If Lambert [II] was in fact also called Baldric, it suggests a relationship (which has not been identified) with the early Graafen van Betuwe... and Comtes de Looz..., in which three bishops of Liège named Baldric belonged. "Baldricus…cum uxore mea Oda" founded the collegial church in Brussels by charter dated 1047. The Vita Balderici refers to "comes Lowaniensis Lambertus vir profanæ mentis et moribus barbarus", presumed to refer to Comte Lambert [II]. 1
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