The name Finnian is a boy's name meaning "fair". Finnian and is often added to lists like Saints' Names For Boys and discussed in our forums with posts like "A brother or sister for little Jack or Olivia".
From the experts:
Finnian is a fair jig of a name, energetic and easy on the ear. Finnian (and brother Finian) is also familiar in its alternate spelling through the classic 1968 Broadway musical Finian's Rainbow, later made into a film starring Fred Astaire as Finian McLonergan.
There is also a St. Finnian who was a famous teacher and scholar.
We think Finnian/Finian could really catch on in the wake of cousins Finn and Finlay/Finley.