I think it's better for a girl who isn't Welsh, really. It's like nameing an American child Kansas or Chicago.
I really like
Cambria, it's cute, even though it reminds me of the band Coheed and
Cambria, which, to me, is a good association.
Cambria also has good nicknames, like
Cam,
Cammie, Bri, Bria,
Ria...