Andrew III of Hungary
Initially, he supported the efforts of Andrew III of Hungary, but later turned against him, and became the guardian and the most ardent domestic partisan of the young pretender Charles. After the extinction of the Árpád dynasty in 1301, he was among the so-called oligarchs or provincial lords, who ruled "de facto" independently their dominions. Charles I fought for the Hungarian throne during the civil war relying on his hinterland in Ugrin Csák's province. The elderly lord died in 1311, his dominion was soon integrated into the royal administration.