Gérard was the son of unknown parents. The date and place of his birth have not been found.
He died in 1255. The place is not known.
His wife was Élisabeth de Brabant, who he married in 1246. The place has not been found. They had no known children.
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Death | 1255 |
|