I definately remember Capt Dennis - the first time I ever saw him he was playing the piano at Alfreds one afternoon and entertaining some local kids with his magic tricks. That would have been in the early 80's.
Unfortunately, he liked the rum a way too much and that was his downfall. I also remember fishing him out of the ocean late one night on our way home from the Fisherman's Club and putting him on to a beach lounger chair to sober up. While I can't recall the details, he was supposedly involved in the sinking of a boat off the shore of Negril (and he used to get very upset whenever it was brought up.