Have we got an earliest date for 'My Bonnie'? If these pieces are based on 'My Bonnie' then it's unlikely they can be older than that. 'My Bonnie (text) is based on the 1860s English song 'Send back my Barney to me'. The clincher is the first line 'Last night as I lay on........ ('my pillow' in the original.) If 'My Bonnie' is 1880s that puts the 1873 date in jeopardy.