There's another thread about this with some partial lyrics posted, which identifies their author (or at least performer) as a SCAdian known as Tamarin from the Kingdom of An Tir, aka most of the Pacific Northwest. Luckily, there are a couple of smaller SCA domains located on the southwest Washington coast, one of which appears to have specific interests in matters bardic).

Putting the two sets of information together gives a respectable number of leads; I've just sent out notes in three separate directions to see what I can pry loose. (As it happens, my paternal grandmother's family had/has deep roots in Pacific County, so I have a personal interest in finding the song, which I hadn't heard of till the threads here came up.)