For some reason I missed a track when I submitted:
Elizabeth Keane’s/Hag’s Purse/The Colliers
And neither of the two Mark Robertses mentioned in the blurb from last.fm is this one. This is the flute, whistle, banjo, bouzouki, and guitar player from Massachusetts.
This is probably also the Mark Roberts contributing a flute/backing electric banjo track on Wooden Flute Obsession volume 1, Disc 2