I consulted Steve Roud's folksong index, where the song is Roud# 3182. It appears as if 6 published texts are all either derived, or more likely just copied, from one in Bell's 'Rhymes of the Northern Bards', 1812. There is no traditional singer listed as informant for any text.

The first line of these is given as "Hey for the buff and the blue". However, in Dave Harker's edition of John Bell's manuscripts, 1985, the first line of the only other text is given as "Through the sevie sike and o'er the mossy moor". I'm pretty sure Barbara is correct here.