What cousin of Herman I, Duke of Swabia also had a chance to rule the Duchy of Franconia?
Conrad I of Germany Conrad I (German: "Konrad" ; c. 881 – December 23, 918), called the Younger, was the first non-Carolingian king of East Francia from 911 to 918. He was the first elected king of East Francia and also the first one to be anointed. He was chosen as the king by the rulers of the East Frankish stem duchies after the death of young king Louis the Child. Prior to this election he had ruled the Duchy of Franconia from 906.
Welf I, Duke of Bavaria Welf I (died 6 November 1101, Paphos, Cyprus) was Duke of Bavaria from 1070 to 1077 and from 1096 to his death. He was the first member of the Welf branch of the House of Este. In the genealogy of the Elder House of Welf he is counted as Welf IV.