From Classic Encyclopedia 1911
CHARLES (Fr. Charles; Span. Carlos; Ital. Carlo; Ger. Karl; derived from O.H.G. Charal,latinized as Carolus, meaning originally "man": cf. Mod. Ger., Kerl," fellow," A.S. ceorl, Mod. Eng. "churl"), a masculine proper name. It has been borne by many European princes, notices of the more important of whom are given below in the following order: (i) Roman emperors, (2) kings of England, (3) other kings in the alphabetical order of their states, (4) other reigning princes in the same order, (5) nonreigning princes. Those princes who are known by a name in addition to Charles (Charles Albert, &c.) will be found after the private individuals bearing Charles as a surname.