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.
Otto III, Duke of Bavaria Otto III (11 February 1261 – 9 November 1312), a member of the Wittelsbach dynasty, was the Duke of Lower Bavaria from 1290 to 1312 and the King of Hungary and Croatia between 1305 and 1307. His reign in Hungary was disputed by Charles Robert of the Angevin dynasty.