Eugene

Eugene is a grandpa name that shows no signs of rejuvenating-- or to quote Jim Carrey, whose middle name this is, "You can never get too cool with a name like Eugene". The hero of Disney's "Tangled" felt the same way, when he changed his birthname of Eugene to the more romantic Flynn.

On the plus side, there were four popes named Eugene, and it had a long history of popularity, from about 1875 to the 1940s. Literary namesake: Eugene O'Neill.

The female form, Eugenie, on the other hand, is quite stylish, belonging to one of the daughters of the Duke and Duchess of York.