This is one variation of the name of the king of the Daoine Sidhe, the faeries, in Celtic folklore. It is also spelled as Finn Bheara or Finbeara, or most often as Finvarra. His wife is Una, the fairest woman among faeries and humans, and he is a benevolent figure who ensures good harvests and great riches to those who respect him, though he has a nasty habit of kidnapping human women. I'm a bit of a mythology geek.
I'm a bit of a mythology geek.