Welf II of Altdorf, Count of Altdorf
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- 1 Welf II of Altdorf, Count of Altdorf [1]
- Imiza of Luxembourg
- 2 Kunigunde of Altdorf [1.1] b. Abt 1020 d. 31 Aug 1054
- Alberto Azzo II d'Este, Margrave of Milan b. 10 Jul 1009 d. 20 Aug 1097
- 3 Welf I, Duke of Bavaria [1.1.1] b. Between 1035 and 1040 d. 06 Nov 1101
- + Ethelinde of Northeim
- Judith of Flanders
- 4 Welf II [1.1.1.1] b. 1072
- 4 Henry IX, Duke of Bavaria [1.1.1.2] d. 13 Dec 1126
- 4 Kunizza [1.1.1.3] d. 06 Mar 1120
- 4 Welf II [1.1.1.1]
- + Ethelinde of Northeim
- 3 Welf I, Duke of Bavaria [1.1.1]
- 2 Welf III of Altdorf [1.2]
- 2 Kunigunde of Altdorf [1.1]