Emma de Mortain was born circa 1058 to Robert de Mortain (c1031-1090) and Matilda of Montgomery (c1050-c1085) and died 1080 of unspecified causes. She married Guillaume de Toulouse (c1040-c1093) .
Children
| Name | Birth | Death | Joined with |
| Mahaut-Philippa de Toulouse (c1070-1117) | 1070 | 28 November 1117 | William IX of Aquitaine (1071-1126) |