The version above (Harding B25(480) was printed in Worcester. By the printing I would guess very late 18C; not defined more closely than 17-- by the Bodleian. Another version with some different verses, Harding B26(119), was printed in Belfast between 1846-1852. The song seems to have been known throughout the British Isles and Ireland, not just in Scotland as stated in the Ballad Index.