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Szapolyai János was the Hungarian name for John Zápolya, who was the King of Hungary from 1526 to 1540. The name "Zápolya" is a Slavicized version of the Hungarian name "Szapolyai", which means "from Szapolyai". Szapolyai was born in Szapolyai, Hungary, in 1487. He was a member of the Szapolyai family, which was a powerful Hungarian noble family.