While the Cailin spelling doesn't appear on popularity charts, other forms such as Kaylin and Kaylen do, along with several similar names, from Caitlin to Jalen to Kayla. The result: a name that feels more common than it actually is.

Opera lovers and fans of the great diva might make a more sensitive choice with Maria.

Unusual, serious, no-nonsense occupational surname that could be borrowed from the boys.