Welf I 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,
Welf IV, idealized portrait in the Weingarten Founder's Book, circa 1500 (Württemberg State Library, Cod. hist. Q 584, fol. 25v)
The House of Welf is a European dynasty that has included many German and British monarchs from the 11th century to the 20th century and Emperor Ivan VI of Russia in the 18th century. The originally F
Welf I of Bavaria
…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. Welf was the son of Albert Azzo II…
Kunigunde of Altdorf, sister of Welf III, wife of Albert Azzo II of Este, Margrave of Milan, parents of Welf IV
Welf II, Duke of Bavaria (1073–1120)
Henry the Proud (1102–1139), Duke of Bavaria and Saxony, and his wife Gertrud of Saxony, daughter of Lothair II, Holy Roman Emperor, Duke of Saxony