Minerva is the long-neglected name of the Roman goddess of wisdom and invention, the arts and martial strength--which might appeal to adventurous feminist parents.
Minerva Pott is a character in Dickens's novel . In Harry Potter, Minerva McGonagall is a Witch and Deputy Headmistress of Hogswarts, and in the Artemis Fowl books, Minerva Paradizo is equally intellectual. There's also a series of kids' mystery books centering around a Minerva Clark.
Nickname Minnie fits right in with the other currently stylish vintage nickname names. Curiously, though, actress Minnie Driver was not born Minerva--but Amelia.