From WordNet (r) 3.0 (2006) [wn]:
Charles I
n 1: as Charles II he was Holy Roman Emperor and as Charles I he
was king of France (823-877) [syn: Charles, Charles II,
Charles I, Charles the Bald]
2: son of James I who was King of England and Scotland and
Ireland; was deposed and executed by Oliver Cromwell
(1600-1649) [syn: Charles, Charles I, Charles Stuart]
3: king of the Franks and Holy Roman Emperor; conqueror of the
Lombards and Saxons (742-814) [syn: Charlemagne, Carolus,
Charles, Charles I, Charles the Great]