| Arnulf II of Boulogne Born: Died: ABT 990 | |||||
| Baudouin I de Boulogne Born: 976 Died: 1033 | |||||
| Lens Born: Died: | |||||
| Henry De Percy Born: 25 MAR 1273 Petworth, Northumberland, England Died: 2 OCT 1314 Fountains Abbey, Yorkshire, England | |||||
| Arnulf I of Frisia Born: Died: 18 SEP 993 | |||||
| Adele of Ghent Born: ABT 985 Died: 1047 | |||||
| Luitgarde de Luxembourg Born: Died: 14 MAY 1005 | |||||
| Lambert I de Boulogne Born: ABT 1022 Died: 1054 Lille, France | |||||
| Louvaine Born: Died: | |||||
| Maud De Percy Born: ABT 1344 Warkworth Castle, Alnwick, Northumberland, England Died: BEF 18 FEB 1377/1378 | |||||
| Robert De Clifford Born: 1 APR 1274 Clifford Castle, Clifford, Herefordshire, England Died: 24 JUN 1314 Clifford Castle, Clifford, Herefordshire, England | |||||
| Ideona De Clifford Born: ABT 1300 Appleby Castle, Westmorland, England Died: 24 AUG 1365 | |||||
| Maud De Clare Born: ABT 1285 Bunratty Castle, Thomond, Clare, Ireland Died: 1 FEB 1326/1327 | |||||