Welf I, Duke of Bavaria

Welf I
Duke of Bavaria
Welf IV, idealized portrait in the Weingarten Founder's Book, circa 1500 (Württemberg State Library, Cod. hist. Q 584, fol. 25v)
Bornc. 1035/1040
Unknown, perhaps Solesino
Died(1101-11-06)6 November 1101
Paphos, Cyprus, Byzantine Empire
Noble familyWelf (founder)
SpousesEthelinde of Northeim
Judith of Flanders
IssueWelf II/V the Fat
Henry IX the Black
Kunizza
FatherAlbert Azzo II, Margrave of Milan
MotherKunigunde of Altdorf

Welf I (c. 1035/1040 – 6 November 1101) was Duke of Bavaria from 1070 to 1077 and again from 1096 until his death. He was the first member of the House of Welf branch of the House of Este. In the genealogy of the Elder House of Welf, he is counted as Welf IV or simply Guelf.