Yeah, the Doffin Mistress was most likely an Ulster sing, as Bertha, bless her, came from those parts and was a doffin mistress herself before meeting Tom.

Seeing their names on a thread does bring back a few memories. Every song was learned by Tom at his mother's knee. Never did find out if he had her knees pickled...

Twenty years ago later this year since Tom Brown joined a different choir, by the way. Time flies.