F is for Francisco. The name Francisco is a Spanish and Portuguese male name and, traditionally, would be given to people born on January 24th, April 2nd, October 3rd or October 4th.
In Spain, the name Francisco Javier would highly likely be given to a male born on December 3rd.
People with the name Francisco often have the nickname Paco (Spain), Pancho (Latin America) or Kiko (Phillipines). In Portugal the nickname is usually Chico.