Andrew Báthory, Prince of Transylvania (b. c. 1563)
Andrew Báthory (Hungarian: Báthory András; Polish: Andrzej Batory; 1562 or 1563 – 3 November 1599) was the Cardinal-deacon of Sant'Adriano al Foro from 1584 to 1599, Prince-Bishop of Warmia from 1589 to 1599, and Prince of Transylvania in 1599. His father was a brother of Stephen Báthory, who ruled the Polish–Lithuanian Commonwealth from 1575. He was the childless Stephen Báthory's favorite nephew. He went to Poland at his uncle's invitation in 1578 and studied at the Jesuit college in Pułtusk. He became canon in the Chapter of the Roman Catholic Diocese of Warmia in 1581, and provost of the Monastery of Miechów in 1583.

Pope Gregory XIII appointed Báthory cardinal during his visit to Rome in 1584. A year later, he was installed as coadjutor bishop of Warmia. He was in Rome again when Stephen Báthory died in 1586. Andrew was one of the candidates to succeed him in Poland and Lithuania, but Jan Zamoyski, the Chancellor of Poland, convinced him to support another candidate, Sigismund Vasa, and to demonstrate the Báthorys' claim to the crown only through nominating his minor cousin, Sigismund Báthory, Prince of Transylvania. After Sigismund Vasa was elected king in 1587, Báthory convinced his cousin's advisors to send reinforcements to Poland to fight against Maximilian of Habsburg, who also claimed the throne. Báthory became Prince-Bishop of Warmia after the death of Bishop Marcin Kromer in 1589.

In the early 1590s, Andrew and his brother, Balthasar Báthory, came into conflict with Sigismund Báthory over the presence of Jesuits in the predominantly Protestant Transylvania. Before long, Sigismund's plan to join the Holy League of Pope Clement VIII against the Ottoman Empire gave rise to new tensions, because the brothers sharply opposed the plan. Sigismund executed Balthasar and confiscated Andrew's estates in 1594. After the Ottomans defeated the army of the Holy League in a series of battles, Sigismund decided to abdicate. He transferred Transylvania to the Holy Roman Emperor, Rudolph II, in 1598, but he returned a few months later.

Sigismund and Andrew were reconciled, and Sigismund renounced Transylvania in favor of Andrew in March 1599. Andrew was supported by Poland and the Ottoman Empire. Rudolph II persuaded Michael the Brave, Voivode of Wallachia, to invade Transylvania. Michael defeated Andrew's troops at the Battle of Sellenberk with the assistance of Székely commoners, to whom he had promised to restore their freedom. Andrew wanted to flee to Poland, but Székely serfs captured and killed him.