Charles IV

WordReference Random House Unabridged Dictionary of American English © 2025

Charles IV, 

1. Biographical ("Charles the Fair'') 1294–1328, king of France 1322–28.
2. Biographical (Charles of Luxembourg) 1316–78, king of Germany 1347–78 and Bohemia 1346–78;
   emperor of the Holy Roman Empire 1355–78.
3. Biographical See Charles I (def. 5).
4. Biographical See Charles III (def. 4).

Collins Concise English Dictionary © HarperCollins Publishers::

Charles IV noun

1. known as Charles the Fair. 1294–1328, king of France (1322–28): brother of Isabella of France, with whom he intrigued against her husband, Edward II of England
2. 1316–78, king of Bohemia (1346–78) and Holy Roman Emperor (1355–78)
3. 1748–1819, king of Spain (1788–1808), whose reign saw the domination of Spain by Napoleonic France: abdicated
4. title as king of Hungary of Charles I
   See Charles I5