'Fionn' meaning 'white' or 'fair'.
If you have no clue on how to pronounce this name, you will most likey get it wrong. It can be a very beautiful name if the combination of letters are understood.
In Ireland Penelope can be used to translate the Gaelic name 'Fionnghuala' (Fionnuala)
An irish legend “The children of Lir” also includes a young girl named Fionnuala. Their statue can be found in Dublin, Ireland.