Stephen Bathory
Around 1549–1550, he was studied in Italy. He later joined the army of the Ferdinand I, Holy Roman Emperor and fought against the Turks. He was captured by the Turks after 1553, and when Ferdinand I refused to pay his ransom, he switched sides, supporting John II Sigismund Zápolya in his quest for power in Eastern Hungary Kingdom. Báthory took on various roles as a feudal lord, military commander, and diplomat during this time. At one point, he was put under house arrest in Vienna for two years, causing him to fall out of favor at Zápolya's court. However, he still held influence and was considered a potential successor to Zápolya.