Guillaume IV. de PonthieuAge: 1160–1121
- Name
- Guillaume IV. de Ponthieu
Wilhelm IV. von Ponthieu
- Name
- Wilhelm IV. von Ponthieu
- Type
- also known as
| Death | 1121 (Age ) |
| Birth | estimated as equal to wife's birth year about 1160 |
| Marriage | Adele de France — View this family 1195 (74 years after death) |
| Family with Adele de France |
| himself |
Guillaume IV. de Ponthieu Birth: estimated as equal to wife's birth year — about 1160 Death: 1121 |
| wife |
Adele de France Birth: possibly a daughter ot the 3d wife, Adele de Champagne — between 1160 and 1170 40 32 Death: after 1218 |
|
Marriage: 1195 — |