The Shadowy Waters

Hi I was wondering if anyone could help me with this.
I'm researching for an art project and an artist has given me the title of the poem she is basing her artwork off of as 'The Shadowy Waters - To Lady Gregory', though I cannot find this title online anywhere and when searching for 'The Shadowy Waters' get a completely different text than the one the artist has given me. Are there two poems both called 'The Shadowy Waters'? Any help much appreciated, thank you!

Have you done an internet search for this title? I think you need to do that first of all. Or get back to "the artist" to ask for more information. This is the link to the original, that I found: http://www.online-literature.com/yeats/798/


I can't find any other author associated with this piece than Yeats.