The following roms are for use as back-up copies only.
You must own the originals to legally use the roms here.

Fire Emblem I and II are roms for the NES. Emu found here

Fire Emblem I

Fire Emblem Gaiden

Fire Emblem III to VI are SNES roms. EMU found here.

Fire Emblem III

Fire Emblem IV

Fire Emblem V

Fire Emblem VI- Fuuin no Tsurugi (J).zip
Free file hosting from File Den  

Thanks to David G for finding the FE VI rom for us.

Fire Emblem VII and VIII are GBA roms. EMU found here.

Fire Emblem ~ The Blazing Sword

Fire Emblem ~ The Sacred Stones

Thanks to ROMWORLD and PJRPG for the roms.