GUILLAUME [III] de Mâcon, son of ETIENNE [I] "Tête-Hardi" Comte de Mâcon [Bourgogne-Comté] & his wife Beatrix of Lotharingia (before 1102-27 Sep 1155). The Chronicle of Alberic de Trois-Fontaines names "comes Renaldus [de Burgundia] fratrem comitem Guilelmum" when recording his marriage[1731]. He succeeded in 1120 as Comte de Mâcon. Comte d'Auxonne 1127. He joined the Second Crusade 1147-1149. "Raynaldus Burgundiæ comes" donated property to Besançon cathedral, with the consent of "fratris nostri Guillermi comitis et...collateralis nostræ Agathæ Lotharingiæ ducis filiæ", by charter dated 1148[1732]. Regent of Bourgogne-Comté for his niece, whom he attemptedto deprive of her inheritance. "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", by charter dated 28 Oct 1157[1733].
m PONCE de Traves Dame de Traves, daughter of THIBAUT Seigneur de Traves & his wife Alix --- (-15 Apr after 1157). 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"[1734]. 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[1735]. It is more likely that Alberic confused Ponce with her sister Alix. "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"[1736]. The necrology of La Charité records the death "XVII Kal Mai" of "Poncia comitissa Burgundiæ"[1737].
Mistress (1): ---. The name of Comte Guillaume's mistress is not known.
Comte Guillaume [III] & his wife had two children