The Oakham Poachers/Bold Poachers song is a true story - one of the three Perkins brothers was the ancestor first cousins of mine.
The detail in the song is pretty close to the truth - John (26), Robert (24) and George (23) Perkins were poaching one night & were assailed by a couple of keepers, one of whom was shot in the private parts (according to the transcript of the trial which I have seen). As a result of all this John was hung, Robert and George were confined in a hulk on the Thames where Robert died due to the appalling conditions. George was finally transported to Van Diemen's Land (Tasmania) where he served out his time. He stayed in Tasmania until his death in early middle age when a coroner's report remarked on the fact that his body was covered in scars from the lashes he had received while he was a convict.