I can respond to some of the Cornish comments (nice to be in the company of Breezy!). It was sung in Wadebridge at the 'Swan' in the 60s and 70s by Harry Lightfoot. He was an elderly tenor with very little breath and we all went quiet when he sang, or we would never have heard him. It was pretty fragmentary at that time. A fragment of what he sang was printed in the EFDSS magazine by a singer who had recently moved to Cornwall. After Harry died, about 1972, no one sang it but I did it at Mervyn's Stable Loft club at the Molesworth Arms about 5 years later, and later it was revived in the area. It got absorbed into a sequence that Tommy Morrissey and Charlie Pitman used to sing in Wadebridge, Padstow and St Merryn in about the 90s, as a much more upbeat and witty item, and I think they recorded it on their cassette produced about 2000. The upbeat version is still sung in and around Padstow, with a chorus about 'I loved Jemima, and Jemima she loved me'.