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.
Counts of Wartenberg Counts of Wartenberg (German: "Grafen von Wartenberg" ) were a German comital family ("Grafen") which held large territories in Rhenish Hesse, Electoral Palatinate and Upper Swabia.