Eugene is a grandpa name that at least so far has shown 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's had a long history of popularity, as a Top 50 name from about 1875 to the 1940s. Literary namesake: Eugene O'Neill, and in art history Eugene Delacroix. In addition, there is the classic Russian novel by Pushkin, Eugene Onegin and Eugene is the name Neil Simon used for his stand-in in three autobiographical plays, starting with Brighton Beach Memoirs.
The female form, Eugenie, on the other hand, is quite stylish, belonging to one of the daughters of the Duke and Duchess of York.