Fay David stood in as Padmé's handmaiden for some pickup shots that were used for the celebration scene at the end of The Phantom Menace.
While Fay was probably just standing in for an already existing handmaiden, she surmised that the handmaiden was "perhaps named Fé" - a new character entirely.
An update of the Databank, titled 'The Women of Star Wars', confirmed Fé's status as a canon and separate character.