What cousin of Herman I, Duke of Swabia also had a chance to rule the Duchy of Franconia?
Herman I, Duke of Swabia Herman I (died 10 December 949) was the first Conradine Duke of Swabia (from 926), the son of Gebhard, Duke of Lorraine, and a cousin of King Conrad I of Germany.
Rudolf I, Duke of Bavaria Rudolf I of Bavaria, called "the Stammerer" (German: "Rudolf der Stammler" ; 4 October 1274 – 12 August 1319), a member of the Wittelsbach dynasty, was Duke of Bavaria and Count Palatine of the Rhine from 1294 until 1317.