[2] Mathilde was the only child of Archambault of Bourbon[3] and his wife Alix (or Adelaide) of Burgundy (daughter of Odo II).
[4] She fled to her grandmother's estate in Champagne[1] During her escape, she allegedly also used violence,[4] and for this she was excommunicated by Archbishop Henri de Sully of Bourges.
[5] After she arrived in Champagne, she asked Pope Celestine III for a divorce from her husband, arguing that Gaucher IV and she were close relatives and that the marriage therefore had been inadmissible.
These men found that Mathilde and her husband were third cousins, as they were both great-great-grandchildren of William II, Count of Burgundy, and that, therefore, her claim that they were too closely related was justified.
Guy II had initially recognized Margaret as heir of Bourbon, however, he later claimed the Lordship for his oldest son, Archambault VIII.