Nielsen Hayden genealogy
Ancestors of Berchtold II of Swabia and Zähringen
Abt 1036 - 1111 (~ 75 years) ┌── Berthold von Villingen ( - 15 Jul 1024)
┌── Bertold IV and I of Carinthia (Abt 1005 - Abt 5 Nov 1078)(m. Abt 1032)
│ └── (Unknown) von Nellenburg
│
Berchtold II of Swabia and Zähringen (Abt 1036 - 12 Apr 1111)
│
│ ┌── Ernst of Swabia (Abt 970 - 31 May 1015) =>
│ ┌── Hermann of Swabia (Abt 1007 - 28 Jul 1038 near Milan, Lombardy, Italy)(m. Abt 1036)
│ │ └── Gisele of Swabia (11 Nov 995 - 14 Feb 1043 Goslar, Lower Saxony, Germany) =>
│ │
└── Richwara of Swabia ( - Bef 1056)(m. Abt 1032)
│
│ ┌── Olderich II Manfredo (992 - 29 Oct 1034 Turin, Torino, Piedmont, Italy)(m. Bef 1014) =>
└── Adelaide of Susa (Abt 1015 - 27 Dec 1091 Canischio, Turino, Piedmont, Italy)(m. Abt 1036)
└── Berta of Este ( - 1029)(m. Bef 1014) =>