GEOFFROY de Châteaudun (-mid-Oct 1100, bur Nogent-le-Rotrou[2884]). Orderic Vitalis names him and his father[2885]. "Gauffridus vicecomes, Hugo vicecomes Castriduni, Rotrocus frater eius de Montfort" witnessed a donation to Saint-Denis de Nogent by "Henricus vicecomes Mauritanie"[2886], the charter dated to [1060] in the compilation. "Gaufridi, Hu[gonis], Rotroci, Fulcoisi filiorum meorum" consented to the confirmation of donations to Saint-Denis de Nogent by "Rotrocus castri Mauritanie comes atque Dunensis castri vicecomes" dated 11 Jan 1078[2887]. He fought in the battle of Hastings 14 Oct 1066[2888]. He succeeded his father in [1080] as Comte de Mortagne. "Gaufridus castri Mauritaniæ comes" confirmed donations to Saint-Denis de Nogent by charter dated [1080] in which he named "avus meus dominus Gaufridus vicecomes Castriduni et pater meus Rotrocus comes"[2889]. He adopted the title Comte du Perche after 1090. "Hugo vicecomes de Castroduno" donated the church of Saint-Léonard de Bellême to Marmoutier, with the consent of "Gausfredo comite fratre eius, Roberto Mandaguerran fratre eius, Comitissa uxore eius, Gausfredo filio eius, Matilde filia eius", by charter dated to [1092/1100][2890]. His burial at Nogent-le-Rotrou is confirmed by the charter dated 1099 under which "Rotrocus filius domini Gauffridi comitis Mauritaniensis" confirmed donations to Saint-Denis de Nogent after returning from Jerusalem and visiting his father's tomb[2891]. m BEATRIX de Ramerupt, daughter of HILDUIN [IV] de Montdidier et de Ramerupt Comte de Roucy & his wife Adelaide de Roucy (-2 Sep after 1129). "Beatrice uxor mea et filio meo Rotroco nec non fratribus meis" confirmed the confirmation of donations to Saint-Denis de Nogent by "Gaufridus castri Mauritaniæ comes" dated [1080][2892]. The Chronicle of Alberic de Trois-Fontaines names "Beatrix" as second daughter of Hilduin Comte de Roucy and incorrectly names her husband "Rotroldo comiti de Pertico"[2893]. The Genealogiæ Scriptoris Fusniacensis names "comitis Hilduini de Rameruth maior natu filia dicta Beatrix" as wife, also incorrectly, of "Rotaldo comiti de Pertica"[2894].She is named as wife of Geoffroy Comte du Perche by Orderic Vitalis, but this source incorrectly states that she was the daughter of "the count of Rochefort"[2895], while specifying in another passage that her son Rotrou was consanguineus of Alfonso I King of Aragon[2896]. A close family relationship with the Comtes de Rochefort is nevertheless suggested by "Rotrocus comes Perticensis, Beatrix comitissa mater eiusdem" witnessing the charter dated [1114] under which "Guido comes Rocheforti" donated property to the abbey of Sainte-Trinité de Tiron[2897], although this relationship has not been identified. "Rotrocus comes et Beatrix mater eius atque Mathildis uxor comitis" subscribed the charter dated to [1105/07] under which "Guillermus de Loiscel" made donations to Saint-Denis de Nogent[2898]. Comte Geoffroy & his wife had five children