The Welsh song to the tune, I think, is older than 1880s. It's popular as Twll Bach y Clo, about a farm servant who sneaks into the farmer's house to 'court' a maid within, and has to hide in a closet and watch through the keyhole for a chance to escape. A baby is born 9 months later with a birth mark the shape of a keyhole... The tune is generally recognized as being a Henry Work tune...Australia - Wales - USA. Why this feeling of deja vu?
sian