The name Fannie is a girl's name . Fannie and discussed in our forums with posts like "A brother or sister for little Jack or Olivia".
From the experts:
It's hard to believe, via a 21st century sensibility, that Fannie was ever a Top 50 name. But Fannie was even more popular than Fanny in its late 19th century heyday, and stuck around much longer, staying on the Top 1000 until the 1960s while Fanny fell off in 1940. Today, however, Fannie sounds antiquated at best, and rude at worst.