 With her influence, the Supponids became the most powerful noble family in Italy during the two decades of Louis's reign and one of the few to hold high offices.Following Louis's death, the Supponids supported their relatives, the dukes of Friuli, and the German claimants for the Italian crown against the Guideschi dukes of Spoleto and the West Franks.Their influence declined rapidly after they fell out with Berengar I in 913 and joined the faction of Rudolph II of Burgundy in 922.