Fae

Fire Emblem:Rekka no Ken
Fa(or Fae, as she is referred to by Hawkeye), can be found in the house on Chapter 22 of Eliwood's story on Fire Emblem: Rekka no Ken,making a brief cameo(her name is mentioned only if Hawkeye enters the house.)

Fire Emblem:Fuin no Tsurugi
She is a playable character in Fire Emblem: Fuin no Tsurugi