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.
Sophia of Wittelsbach Sophia of Wittelsbach (1170-1238) was a daughter of Otto I Wittelsbach, who was Count Palatine and later Duke of Bavaria, and his wife Agnes of Loon.