Just a snatch from 'Ballads Songs and Snatches' by Jackson-Houlston, from the Hardy Song Collection. I know this stanza well but because it's not part of my repertoire I just can't place it. It looks like it might be a part of 'Hares on the Mountains' but I don't think it is. It's part of a love song and I can't place it.

I wish I was a fisherman by yon river side
And Polly a salmon swimming in the tide
I'd throw out my fish-net, catch her in a snare
And bring home my Polly I vow and declare.

I know I'm gonna kick myself when you tell me.
How quickly can Mudcat solve this one?