Cliodhna and its simplified form Cliona are both well-used in modern Ireland though they are ancient mythological names. The goddess Cliodhna left the Land of Promise with a mortal but was punished for her desertion by being swept to sea by a giant wave.

Attached in Irish mythology to a Cliona who was, among other things, an inspirer of poets. Cliona is well-used in modern Ireland, along with Irish form Cliodhna, though it's largely unknown in the rest of the world.