Marty and Martie are old-fashioned gender-neutral nickname names, boyish nicknames not heard much since the middle of the last century. That could change, though, with the rise of vintage boyish nicknames for girls. They have a certain charm and may come back into style along with mother names such as Martha.

A cute diminutive of Jack, already technically a nickname for John, famously borne by Hong Kong actor, director and martial artist Jackie Chan.

In the Top 25 in the unisex seventies, these days Tracy would more likely be Gracie.

Jan, not short for Janet or Janice but standing on its own, ranked in the Top 200 throughout the 1950s but dropped off the Top 1000 in the 1980s and now is a truly extinct name, given to fewer than five baby girls in the US each year.

Fantine is a rarely heard French name except as a character in the Victor Hugo novel Les Misérables.