THIBAUT de Semur, son of GEOFFROY [I] Seigneur de Semur & his second wife Mathilde de Chalon dame de Donzy (-Tolosa [1065]). "Gausfredus et uxor mea Mahaldis et filii mei Gausfredus, Herveus, Oddo, Tethbaldus, Lanbertus" donated property to Cluny by charter dated to [1015][613]. His parentage is also deduced from the charter of "Gaufredus" dated [1054] which names "Tetbaldus comes avunculus ipsorum" (referring to Geoffroy and Dalmas, sons of Dalmas)[614]. "Tetbaldus comes Cabilonensium" donated property to Châlons Saint-Marcel by undated charter which records that "comes Gaufredus" married "aviam meam Adheleydam comitissam" after the death of "avii mei Lamberti" and names her son "avunculus meus domnus Hugo comes et episcopus", and is subscribed by "Ermentrudis eius coniugis…"[615]. "Domnus Hugo comes Cabilonensium" donated property "in pago Augustudunensi in villa Martiniacensi" to Paray-le-Monial by undated charter subscribed by "Ottonis nepotis eius, Teudbaldi nepotis eius, Maltidis sororis eius"[616]. "Tedbaldi comitis nepotis eius" witnessed a charter dated 1035 immediately after "domni Hugonis comitis"[617]. He succeeded his maternal uncle in 1039 as Comte de Chalon.
mERMENTRUDE, daughter of ---. "Ermentrudis eius coniugis" subscribed the charter of "Tetbaldus comes Cabilonensis" dated [1050][618]. Her origin is not known.
Comte Thibaut & his wife had three children