[Joanne's Tree.1 GED.GED]
[Etienne De Coligny.FTW]
[Alix De Montmorency.ged]
Bertha of Burgundy [daughter of Matilda of Burgundy], m. a Count of Geneva, name unknown. [Ancestral Roots]
Turton says it is Aymon of Geneva, d. c 1016, that Bertha married. Also that Bertha was "of Flanders", being daughter of Arould I of Flanders & Maud of Saxony. Turton did not know of the existence of Badouin III of Flanders, who m. Mathilde of Saxony, as he has Arnoul II as son of Arnoul I. If he had, I am sure he would have said Badouin III & Mathilde (Maud) of Saxony.
I am following AR and keeping Bertha daughter of an unknown count. But I will follow Turton in identifying Bertha's husband.