William IV, Count of Ponthieu
b:
d:
b:
d:
| PARENT (M) John I, Count of Ponthieu | |||
| Birth | |||
| Death | |||
| Marriage | to Beatrice de St Pol | ||
| Father | Guy II of Ponthieu | ||
| Mother | ? | ||
| PARENT (F) Beatrice de St Pol | |||
| Birth | |||
| Death | |||
| Marriage | to John I, Count of Ponthieu | ||
| Father | ? | ||
| Mother | ? | ||
| CHILDREN | |||
| M | William IV, Count of Ponthieu | ||
| Birth | |||
| Death | |||
| Marriage | to Alys, Countess of the Vexin | ||
| PARENT (M) William IV, Count of Ponthieu | |||
| Birth | |||
| Death | |||
| Marriage | to Alys, Countess of the Vexin | ||
| Father | John I, Count of Ponthieu | ||
| Mother | Beatrice de St Pol | ||
| PARENT (F) Alys, Countess of the Vexin | |||
| Birth | |||
| Death | |||
| Marriage | to William IV, Count of Ponthieu | ||
| Father | Louis VII of France | ||
| Mother | Constance of Castile | ||
| CHILDREN | |||
| F | Marie, Countess of Ponthieu | ||
| Birth | |||
| Death | |||
| Marriage | to Simon, Count of Ponthieu | ||
4 Eleanor of Castile b: ABT 1245 d: 1290
+ Edward I b: 17 JUN 1239 d: 7 JUL 1307
5 Edward II b: 25 APR 1284 d: 21 SEP 1327
6 Edward III b: 13 NOV 1312 d: 21 JUN 1377
7 John of Gaunt, 1st Duke of Lancaster b: 6 MAR 1340 d: 3 FEB 1399
+ Blanche
8 Henry Beaufort b: ABT 1375 d: 11 APR 1447
+ ?
+ ?
