Bryony is an unusually strong plant name --the bryony is a wild climbing vine with green flowers --that caught on in the U.K. before sprouting here. The name of the young character in the Ian McEwan novel Atonement is spelled Briony, which is the variation and Bryony the original.

This name was used by Shakespeare (who got it from Plutarch) in Antony and Cleopatra for one of the attendants of the Egyptian queen. An interesting possibility, it is heard occasionally in the UK, even less frequently in the US.

A popular choice in Ireland, Clodagh was the name of a river and later a saint. The "cloddy" aspect of the name has prevented it from spreading beyond Ireland, but that could change with the rise of other Irish choices like Maeve and Orla.