Charles IV (Czech: Karel IV., German: Karl IV., Latin: Carolus IV; 14 May 1316 – 29 November 1378[1]), born Wenceslaus,[2] was the second King of Bohemia from the House of Luxembourg, and the first King of Bohemia also to become Holy Roman Emperor. He was the eldest son and heir of King John of Bohemia, who died at the Battle of Crécy on 26 August 1346. Charles inherited the County of Luxembourg and the Kingdom of Bohemia from his father. On 2 September 1347, Charles was crowned King of Bohemia. On 11 July 1346, prince-electors elected him King of the Romans (rex Romanorum) in opposition to Emperor Louis IV. Charles was crowned on 26 November 1346 in Bonn. After his opponent died, he was re-elected in 1349 (17 June) and crowned (25 July) King of the Romans. In 1355 he was crowned King of Italy on 6 January and Holy Roman Emperor on 5 April. With his coronation as King of Burgundy, delayed until 4 June 1365, he became the personal ruler of all the kingdoms of the Holy Roman Empire.