Her parentage is confirmed by the charter dated 28 Oct 1157 under which [her sons] “comes Stephanus...et fratrem meum comitem Gerardum” settled disputes with Charlieu abbey, with the consent of “matris nostræ...comitis Willelmi patris nostri et avi nostri domini Theobaldi de Treva”. It is unlikely that she married Thibaut [I] Seigneur de Rougement: the Chronicle of Alberic de Trois-Fontaines names "Aleyde comitissa qui fuit unica heres de Treva, relicta Theobaldi de Rogemont" as wife of "comitem Guilelmum". Bouchard points out that Thibaut de Rougemont was still alive when Comte Guillaume is alleged to have married Ponce de Traves and suggests that the chronicle confused her with her mother. It is more likely that Alberic confused Ponce with her sister Alix who...is reported to have married Thibaut [II] Seigneur de Rougemont. "Willelmus Masticonensis comes et Burgundie" donated "abbatiam de Balma" to Cluny by charter dated 14 Jun 1147, confirmed by "Poncia comitissa uxore mea et filiis meis Stephano et Gerardo"
The necrology of La Charité records the death “XVII Kal Mai” of “Poncia comitissa Burgundiæ”. 1
Research Notes: