Pétronille married Jean de Cysoing Abt 1150. Jean was born Abt 1120; died 1154. [Group Sheet]
Jean married Mabille de Guînes Abt 1190. Mabille (daughter of Baudouin II de Guînes and Christine d'Ardres) was born Abt 1165. [Group Sheet]
Jean — . Unknown [Group Sheet]
Catherine — Gérard de Schelderode. Gérard died 1284. [Group Sheet]
Marie married Hugues d'Antoing Abt 1250. Hugues was born Abt 1195; died Abt 1261. [Group Sheet]