Robert was the son of Robert de la Motte but his mother is unknown. The date and place of his birth have not been found.
His wife was Mahaud de Rieux. They were married, but the date and place have not been found. Their two known children were Louis (c1375-?) and Péronelle (c1375-?).
| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | sire de Bossac |