Ladislaus of Naples
During the dynastic struggle for the Hungarian-Croatian kingship, he was initially supportive of Ladislaus of Naples, but from 1403, he sided with Sigismund. Two years later, he married his first wife Dorothea of Gara, who was the daughter of the Palatine of Hungary Nicholas Garay. In 1411, he made a pact with nobleman Ivaniš Nelipić against Ladislaus of Naples. In this pact, he bethrothed his eldest son Ivan VI Frankopan to Ivaniš's daughter Catherine.