1. Baudouin III, Comte de Guines married Maud de FIENES.
Maud de FIENES was the daughter of William de FIENES (1160-1241) and Agnes de DAMPMARTIN ( - ). She and Baudouin III, Comte de Guines had the following children:
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2. Arnoul III, Comte de Guines was the son of Baudouin III, Comte de Guines and Maud de FIENES.