John Amos Comenius was born in 1592 in the Margraviate of Moravia in the Bohemian Crown. His birthplace is uncertain and possibilities include Uherský Brod (as on his gravestone in Naarden), Nivnice, and Komňa (from this village he took his surname, which means "a man from Komňa"), all of which are located in Uherské Hradiště District of today's Czech Republic. John was the youngest child and only son of Martin Komenský (died 1602–4) and his wife Anna Chmelová. His grandfather, whose name was Jan (János) Szeges, was of Hungarian origin. He started to use the surname Komenský after leaving Komňa to live in Uherský Brod. Martin and Anna Komenský belonged to the Moravian Brethren, a pre-Reformation Protestant denomination, and Comenius later became one of its leaders. His parents and two of his four sisters died in 1604 and young John went to live with his aunt in Strážnice.