Guerau was the son of unknown parents. The date and place of his birth have not been found.
His wife was Estefania Malasignada de Urgel. They were married, but the date and place have not been found. They had no known children.
| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | vicomte d'Ager | |||||
| Nobility Title | vicomte d'Urgel et de Gérone |