While I was looking for something quite different, I came across a reference to a man called Thomas Day, who was a Black Jamaican, born a slave in Spanish Town, managed to escape to England, but ended up being convicted and sent to a convict settlement in Tasmania, in 1821.
This is comes from a book about the life of an English Quaker called George Washington Walker who did some missionary journeys and ended up in Hobart, Tasmania, where he encountered Day. I have more information, so I hope to put up a page about Thomas Day, and possibly other Jamaicans who also went nearly to the ends of the earth. I already have a page about 'Billy Blue' who ended up in Sydney, so Thomas Day and the others may also arrive on the Jamaicans Abroad site.