Faith is a little sappy and makes me roll my eyes internally a bit. I don't know any Faiths. I think I know of a baby with
Faith as a middle name, though, maybe.
I don't think most people would spell
Fay as
Faye. I prefer
Fay, it's short and snappy.
Fay is WAY stronger than
Faith as a name, like a hundred times stronger.
Faith is a whiny spoiled brat name;
Fay is a little icy and super independant.