Wilhelm was born about 1205, the son of unknown parents. The place is not known.
His wife was Marguerite de Montfaucon. They were married, but the date and place have not been found. Their only known child was Engelbert (c1225-1264).
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | ABT 1205 |
|