CHARLES CONSTANTIN ([905/10]-after Jan 962). Flodoard names "Karlo Constantino, Lucdowici Orbi filio"[58]. "Hludovicus…imperator augustus" gave three serfs to "fideli nostro Bononi" at the request of "filius noster Karolus" by charter dated 3 Jun 924[59]. His birth date range is estimated on the basis of his having been a young adult or adolescent at the time of the 924 charter in which he is named. The absence of proof that Charles Constantin was the grandson of the Byzantine emperor is discussed above in relation to his father's betrothal. "Carolus comes" is named "consanguineus noster" by Conrad I King of Burgundy in two charters of the latter dated 28 Mar 943 and 18 May 943[60], which suggests that he may have been the son of Adelais, assuming that her Burgundian origin is correct and assuming also that the Burgundian origin of Willa, wife of Rudolf I King of Burgundy, is incorrect (see above). He was named Comte de Vienne in 926 by his cousin Raoul King of France, in succession to his cousin Hugues Comte d'Arles, who was then proclaimed king of Italy. The province of Vienne was confiscated in [Aug/Sep] 928 and granted to Héribert de Vermandois to govern in the name of the latter's son Eudes. Charles Constantin remained at Vienne. He swore allegiance to Conrad "le Pacifique" King of Burgundy in 943[61]. "Karolus comes" sold land "in villa Brociano" by charter dated 19 May 960 which names "Teutbergi comitisse"[62]. m TEUTBERGA, daughter of --- (-after 19 May 960). "Teutbergi comitisse" is named in the charter of "Karolus comes" dated 19 May 960 which recorded the sale of land "in villa Brociano"[63]. Her origin is not known. Her name suggests a connection with the family of the Comtes de Troyes and it has been suggested[64] that she was Teutberga [de Troyes, daughter of Warnarius [Garnier] Vicomte de Sens [Comte de Troyes] & his wife Teutberga d'Arles]. Gingins-la-Sarra points out that Teutberga was the name of the third wife and widow of Engelbert, of the family of the vicomtes de Vienne, who could have married Charles Constantin as her second husband[65]. There seems to be no basis for this speculation other than the name. Charles Constantin & his wife had [three] children