Caroline

fem. proper name, from French, from Italian Carolina, originally a fem. adjective from Medieval Latin Carolus "Charles" (see Charles).

caroline (adj.)

1650s, "of or pertaining to a Charles," from French, from Medieval Latin Carolus "Charles" (a name from the common Germanic noun meaning "man, husband;" see carl). Especially of Charlemagne, or, in English history, Charles I and Charles II.