Hi Finndabhair,
I found the name Fionnabhair in the book "Celtic Baby Names" by
Judy Sierra:
Fionnabhair f. (fyuhn-OOR)
From the Old Irish name Finnabarr: finn = 'bright, fair' + siabhre = 'phantom, fairy', the Irish equivalent of the Welsh Gwenhwyfar (Guenivere). A legendary Finnabarr was daughter of
King Aillil and
Queen Maeve of Connacht.
/
Satu
www.nordicnames.de