Biography
There are numerous artists with this name, although only one has any music in their own name listed on Discogs or MusicBrianz, that being the first in this list (for the Northern Irish folk singer, see Seán Donnelly:
1) Sean Donnelly is an American musician who was a member of Rhythm Collision and Taste Of Fear. He has a track in his name on the charity/tribute album "Stroke: Songs for Chris Knox".
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2) Sean Donnelly is one third of Edinburgh based trio, The Dry Boak.
3) As well New Zealand, Canada as England have musicians with the same name.
Biography text from Last.fm, available under CC BY-SA.