The name Clio is a girl's name of Greek origin meaning "glory". Clio and is often added to lists like Best Cool Unusual Girls' Names and discussed in our forums with posts like "Heaven, Hell, Purgatory -- Girls".
From the experts:
Clio is the name of the ancient Greek mythological muse of history and heroic poetry, one that is rich with modern charm and would make an intriguing choice, especially thanks to its dynamic o-ending. Unlike the sound-alike Cleo, which brings up visions of Cleopatra, Clio is very much a stand-alone name.
Other Greek muse names you might consider: Thalia and Calliope.