Emily, you are not confused - they are two different bands with completely different repertoires. The Wolfe Tones (your guess about their name is correct!) have been going for 30 odd years at least, and their repertoire is, broadly speaking, 'Irish Rebel', while Wolfstone are a youngish Scottish band playing more folkrock-oriented music, I believe, although from what little I've heard it isn't too rocky (by my conservative standards)and sounds very good.