The Green Fields of Canada (Farewell to the land of Shilealigh & Shamrock That's the one! I always heard it referred to as the Shamrock shore (as opposed to Paddy's Green S S, for example...) But right you are, it IS the green fields of Canada.
Cheers and thanks
Larry
PS Ye Brave young sons of Erin's Isle is one of my favs as well.