John Zápolya
John Zápolya or Szapolyai (Hungarian: Szapolyai/ Zápolya János; Croatian: Ivan Zapolja; Romanian: Ioan Zápolya; Slovak: Ján Zápoľský; 1487 – 22 July 1540), was King of Hungary (as John I) from 1526 to 1540. His rule was disputed by Archduke Ferdinand I, who also claimed the title King of Hungary.