The tune first appeared in 1742 as "My loves bonny when she smiles on me." There is a song to the tune in Scots Musical Museum, #13, but I don't know if these are 'original' verses. The tune seems to have been first published as "Flowers of Edinburgh" in Oswald's Caledonian Pocket Companion, bk. 3, c 1751, but there are no verses there.