I stumbled on this word while working on my 19th century Wagons & Carriages book. Apparently it is an Irish expression used in relation of the death of an individual and said as a lamentation over the dead.
I came across this while reading an excerpt from "The Barouche Driver & His Wife" ©1807. ON a quick search you can find in Google books 66 results of the word. I didn't take the time to see if several of those were repeat books, as is often the case with Google Books.
I mention this tidbit because of it's unique nature for Irish characters and it's relationship to 19th century use.