Nielsen Hayden genealogy
Ancestors of Guigues II of Vion
895 - Bef 957 (~ 71 years) ┌── Rostaing I (Abt 800 - ??)
┌── Rostaing II d'Annonay (Abt 830 - Bef 889)
│ └── Sufficia
│
┌── Guigues I d'Annonay (Abt 860 - ??)
│ └── Berthilda ( - Aft 889)
│
Guigues II of Vion (Between 885 and 895 - Bef 957)