Frederick refused to accompany Otto to Italy in 951. He participated in another rebellion with Liudolf, Duke of Swabia, and Conrad, Duke of Lorraine, luring the king to Mainz in 953.
In 951, Frederick did not accompany Otto on a journey to Italy. Later, he participated in a rebellion against the king with Liudolf, Duke of Swabia, and Conrad, Duke of Lorraine, by luring the king to Mainz in 953.