king in 1417, Ernest first attempted to gain control over Frederick's territories himself, but then came to an agreement with him and successfully defended Tyrol against Sigismund's pretensions. Ernest turned out to be a capable ruler of the Inner Austrian lands; his eldest son Frederick V would become sole heir of all Habsburg lines, elected King of the Romans in 1440 and crowned Holy Roman Emperor in 1452. Ernest died at Bruck an der Mur, and was buried in the Cistercian monastery of Rein near Graz. His nickname the Iron only came into use after his death. Family and children On 14 January 1392, Ernest married his first wife, Margaret of Pomerania. She was a daughter of the Griffin duke Bogislaw V of Pomerania and his second wife, Adelheid of Brunswick-Grubenhagen. They had no children. She died in either 1407 or 1410, according to contradictory necrologies. On 25 January 1412, Ernest married his second wife, the Piast princess Cymburgis of Masovia, who was his equal in vitality and with whom he had nine children: Frederick III, Holy Roman Emperor (21 September 1415 – 19 August 1493) Margaret of Austria (1416/17 – 12 February 1486), married on 3 June 1431 to Frederick II, Elector of Saxony Albert VI, Archduke of Austria (18 December 1418 – 2 December 1463) Alexander of Austria (died 1420) Rudolf of Austria (died before 1424) Catherine of Austria (1420 – 11 September 1493), married on 15 July 1447 to Charles I, Margrave of Baden-Baden Leopold of Austria (died before 1424) Anna of Austria (died 11 November 1429) Ernest of Austria (died 10 August 1432) As the ruler of Inner Austria and founder of the older Styrian line of the Habsburgs, which, by their son, Frederick III survived the Albertinian (Austrian) and Tyrolean lines, Ernest and Cymburgis became the ancestors of all later emperors of the Habsburg monarchy. Ancestors External links Entry in Aeiou Encyclopedia 1377 births 1424 deaths 15th-century dukes of Austria Dukes of Styria Dukes of Carinthia Dukes of Carniola People from Bruck an der Mur Burials at Rein Abbey, Austria Austrian people of Italian descent Austrian people of German descent Medieval Knights of the Holy Sepulchre