Two further matters - the tune used for "The Snows" is given in Bruce and Stokoe's Northumbrian Minstrelsy (1882) under the title "My love is newly listed" with a note outlining Thomas Doubleday's collection of it and its publication in 1821 with the text under discussion. (page 97)

A forum search for "Doubleday" produces some relevant threads, one of which (on Northumbrian Fishing songs) shows that Graham Pirt knows a bit more about Doubleday.