Re Fanny Power, the DT ascribes the poem to Yeats but surely it would be a Carolan original?

Apparently Carolan preferred his poems to his music and wrote the words first and added a tune. It would seem unlikely that the Carolan original would be scrapped in favour of a later poem by Yeats.

And I can't find anything to link it to Yeats at all. Anyone know?

cheers, Terry