ROBERT de Grantmesnil, son of --- (-killed in battle 17 Jun [1040]). Guillaume of Jumièges records that “Robertus de Grentesmaisnil” died in the same battle as “Rogerius [de Toenia]“[278]. The necrology of the monastery of Ouche records the death "17 Jun" of "Robertus de Grentemesnil"[279].
m as her first husband, HAWISE, daughter of GIROIE & his wife Gisla de Bastembourg (-10 May ----). Guillaume of Jumièges records that “Richardus Ebroicensis comes...Willelmus...frater eius” married “Hadevisam filia Geroii relictam Roberti de Grentemaisnil”[280]. Orderic Vitalis records that "Geroius" married “Gislam Turstini de Basteburgo filiam” by whom he had “septem filios et quatuor filias...Ernaldus, Willermus, Fulcoius, Radulfus Mala-corona, Rodbertus, Hugo et Geroius, Heremburgis, Hadvisa, Emma, Adelais”, adding in a later passage that Hawise married firstly “Rodberto de Grentemaisnilio”, by whom she had “Hugonem et Rodbertum et Ernaldum et totidem filias”, and secondly “Willermo Rodberti archiepiscopo filio” by whom she had “Judith” who later married “Rogerii comitis Siciliæ”[281]. She married secondly Guillaume d'Evreux [Normandie]. The necrology of the monastery of Ouche records the death "10 May" of "Haudvisa mater Hugonis de Grentesmesnil"[282].
Robert & his wife had [seven] children