Isabella Jagiellon [SEP] father
Isabella Jagiellon
Isabella Jagiellon (; ; 18 January 1519 – 15 September 1559) was the oldest child of Polish King Sigismund I the Old, the Grand Duke of Lithuania and his Italian wife Bona Sforza. In 1539, she married John Zápolya, Voivode of Transylvania and King of Hungary, becoming Queen consort of Hungary. At the time Hungary was contested between Archduke Ferdinand of Austria who wanted to add it to the Habsburg domains (see Royal Hungary), local nobles who wanted to keep Hungary independent (see Eastern Hungarian Kingdom
court of Isabella Jagiellon and her son, John Sigismund Zápolya. Isabella and John Sigismund ruled the eastern territories of the medieval Kingdom of Hungary as vassals of the Ottoman Sultan Suleiman the Magnificent. The date of Andrew's birth is uncertain, because his actual age was kept secret in the early 1580s to promote his career in the Roman Catholic Church. He was most probably born in late 1562 or early 1563, according to historian Ildikó Horn. His father died around that time, implying that Andrew was a posthumous son.