I was reading - with interest the Molly Bawn threads but did not recognize the "original" song until I hit this thread. I have known this version for 50 years and still play it on occasion.
I have learned a great deal today to add to my understanding of this song. Apparently I know the version BOATING ON LOUGH REE in Amatory Poems by John Keegan Casey [1816-1849] which originally was Mary Ban (fair/white). My family tree is full of ban & dubh (fair & dark/black).
Very interesting thread!