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.
Rudolph, Duke of Lorraine Rudolph (1320 – 26 August 1346), called the Valiant ("le Vaillant"), was the Duke of Lorraine from 1329 to his death. He was the son and successor of Frederick IV and Elisabeth, daughter of Albert I of Germany. Though he was but nine years of age when his father died and he succeeded to the duchy under the regency of his mother (until 1334), he was a warrior prince, taking part in four separate wars in Lorraine, France, Brittany, and Iberia. He was killed at the Battle of Crécy.