John Zápolya
Following the fall of the medieval Kingdom of Hungary at the Battle of Mohács, in 1527 the Croatian and Hungarian nobles needed to decide on a new king. The bulk of the Croatian nobility convened the Croatian Parliament in Cetin and chose to join the Habsburg monarchy under the Austrian king Ferdinand I von Habsburg. Some nobles dissented and supported John Zápolya, but the Habsburg option still prevailed in 1540, when John Zápolya died.