Robert Count of Mortain
d. 1090
Vitals
Family
About
Robert of Mortain was the Conqueror's half-brother, one of the greatest landholders in Domesday England, and he stands in the Bayeux Tapestry beside Odo and William.
Research notes
ROBERT, Count of MORTAIN (c.1031-1090), son of Herluin de Conteville and Herleva (I99858/I99859, already in the tree); father of Emma of Mortain (our line). This rung LOOPS the Toulouse line onto the existing Conteville family. Standard well-documented medieval royal/comital genealogy per the cited authorities; rungs graded, contested parentage marked note-only, not hardened. ||27 Oct 2026 - DAUGHTER ADDED|| Agnes, wife of Andre de Vitre, mother of Hawise Countess of Derby (CP IV 'Derby' p.191) - a second line from Mortain into this tree. Source: Complete Peerage 2nd ed. vol. IV (1916), 'Derby' pp.191-194 and Appendix I 'Peverel of Nottingham' pp.761-767 (archive.org completepeerageo04coka), read 27 Oct 2026.