The song is more likely the song 'Harry Eddom'. John Kelly didn't sail that trip on the Peridot. Harry Eddom was on board the Cleveland when she went down about the same time. Three crew managed to get into a boat and row for the shore. It was so cold the other 2 died but Harry managed to get ashore and made it to a little hut where he was found the next morning. May have got one or two details wrong but that's the gist of it. Sam Martin sings the song. Can't remember who wrote it but someone will be along shortly to tell us.