- Charles II, Charles I, Charles the Bald - as Charles II he was Holy Roman Emperor and as Charles I he was king of France (1630-1685)
--1 is a kind of Holy Roman Emperor; King of France
- Charles I, Charles Stuart - son of James I who was King of England and Scotland and Ireland; was deposed and executed by Oliver Cromwell (1600-1649)
--2 is a kind of King of England, King of Great Britain
- Charlemagne, Charles I, Charles the Great - king of the Franks and Holy Roman Emperor; conqueror of the Lombards and Saxons (742-814)
--3 is a kind of Holy Roman Emperor; Carolingian, Carlovingian