The origin of Comte Theoderic is not known. An interesting speculation is a relationship with the early Saxon leader Widukind...
Comte d'Autun. Einhard indicates that Theoderich was related to Charles I King of the Franks when he records that in 782 the king sent his three missi "Adalgiso camerario et Geilone comite stabuli et Worado comite palati" to meet "in…Saxonis…Theodericus comes, propinquus regis", the relationship probably being through the wife of Theoderic [I]... "Carolus…rex Francorum et Langobardorum" gave a judgment by charter dated to [Dec 775] which names "fidelibus…Widrigo, Odrigo, Theodrico, Bernehardo, Albuino, Aginhardo, Berngario comitibus et Anshelmo comite palacii nostri". Einhard records that Charles I King of the Franks sent "Theodorico comite et Meginfredo camerario suo" to "aquilonalem Danubii ripam" in 791. "Willelmus…comes" names "genitore meo Theuderico et genitrice mea Aldana" in his charter dated 14 Dec 804 (version two: dated 15 Dec 804) for the foundation of the monastery of Gellone. 1