Lamarca
FWIW, there is no sign of it in the (Irish song/music) index for the Irish Traditional Music Archive. That's not all that surprising, of course. If it is in print it's likely to be in a specialist maritime collection.

There's a vague rattle in the back of my head - but it's probably the sound of decaying brain cells half-remembering one of the previous incarnations of this thread!

Regards