at the Diet of Besztercebánya and in September 1620, war with the Habsburgs resumed. After defeating the Czechs on 8 November 1620 at the Battle of White Mountain, Ferdinand II persecuted the Protestant nobility of Bohemia. Between May and June 1621, he regained Pressburg and the central mining towns. Bethlen again sued for peace and on 31 December 1621, the Peace of Nikolsburg was made. Bethlen renounced his royal title on the condition that Hungarian Protestants were given religious freedoms and were included in a general diet within six months. Bethlen was given the title of Imperial Prince (of Hungarian Transylvania), seven counties around the Upper Tisza River and the fortresses of Tokaj, Munkács (now Mukacheve), and Ecsed (Nagyecsed), and a duchy in Silesia. In 1623 - 1624 and 1626, Bethlen, allied with the anti-Habsburg Protestants, made campaigns against Ferdinand in Upper Hungary. The first campaign ended with the Peace of Vienna (1624), the second by the Peace of Pressburg (1626). After the second campaign, Bethlen offered as rapprochement to the court of Vienna an alliance against the Ottomans and his marriage to an archduchess of Austria, but Ferdinand rejected his overtures. On his return from Vienna, Bethlen wed Catherine of Brandenburg, the daughter of John Sigismund, Elector of Brandenburg. His brother-in-law was Gustavus Adolphus of Sweden. Death Bethlen died on 15 November 1629. His second wife, Catherine of Brandenburg, became Princess Regnant of Transylvania. His first wife, , had died in 1622. Bethlen's state correspondence survives as a historical document. See also Magna Curia References Citations Sources External links History of Slovakia: Part of Historic Hungary II - Modern Times (1526 - 1918). 1580 births 1629 deaths People from Hunedoara County Gabor Monarchs of Transylvania Dukes of Opole Kings of Hungary Hungarian nobility Hungarian people of the Thirty Years' War 17th-century Hungarian people People of the Long Turkish War