Thanks, Stewie.  The chapbook that MacColl referred to, incidentally, was Five Excellent New Songs, printed and sold by William Forrest, at the head of the Cowgate, Edinburgh, 1766.  Baring Gould told Child about it, and it appears in the Additions and Corrections in vol.5 of ESPB, which I missed last night, along with a traditional English version, Dead Maid's Land, noted by Baring Gould from Joseph Haddon of Holcombe Burnell (edited version, with tune, in Songs of the West), and a Scottish text from Motherwell's MS, It's Braw Sailing Here.

Malcolm