HUGUES [III] de Châteaudun, son of ROTROU de Châteaudun Comte de Mortagne & his wife Adelise de Bellême (-1110). "Gaufridi, Hu[gonis], Rotroci, Fulcoisi filiorum meorum" consented to the confirmation of donations to Saint-Nogent by "Rotrocus castri Mauritanie comes atque Dunensis castri vicecomes" dated 11 Jan 1078[1340]. "Gauffridus vicecomes, Hugo vicecomes Castriduni, Rotrocus frater eius de Montfort" witnessed a donation to Saint-Denis de Nogent by "Henricus vicecomes Mauritanie"[1341], the charter dated to [1060] in the compilation. He succeeded his father in [1080] as Vicomte de Châteaudun. "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][1342]. "Hugo vicecomes de Castroduno" donated the church of Saint-Léonard de Bellême to Marmoutier "pro fratribus suis Gausfredo et Rotroco" with the consent of "Gausfredo comite fratre eius, Roberto Mandi Guerram fratre eius, Comitissa uxore eius, Gausfredo filio eius, Matilda filia eius" by charter dated to [1095/1100][1343]."[Cas]trumduni: Hugo vicecomes, Gaufridus [filius eius], Fulcois alius filius..." witnessed the charter dated to [1101/11] under which Adela Ctss de Chartres donated "une terre à Morancez" to Saint-Jean-en-Vallée[1344]. "Hugo vicecomes Castriduni" donated property with the consent of "Gaufridum filium suum…Mithildis comitissa Vindocinensis filia eiusdem Hugonis…Rotrodus de Monteforti frater eiusdem Hugonis" by charter dated [1110/11][1345].
m AGNES [Comtesse] de Fréteval, daughter of FOUCHER Seigneur de Fréteval & his wife Hildeburge Goët. [1095/1110]. "…filiæ ipsius Comitissa et Pagana" consented to the donation by "Fulcherius Nevelonis filius" by charter dated to [1072/84][1346]. "…uxore ipsius Comitissa…" consented to the donation by "Hugonis vicecomitis" by charter dated to [1080/1100][1347]. "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][1348]. "…Agnes vicecomitissa soror sua" consented to the donation by "Nevelo de Fracta Valle" by charter dated to [1096/1101][1349]. "Hugo vicecomes de Castroduno" donated property with the consent of "…Comitissa uxore eius…" by charter dated to [1095/1100][1350].
Hugues [III] & his wife had three children: