29 November 1849 Chartist William Cufay landed in Australia to begin a 21 year penal transportation sentence. Cuffay was reportedly a good singer, and was often said to be a performer of The Laughing Song by William Blake at a number of Chartist events.    
William Cufay, article from Wikipedia     https://en.wikipedia.org/wiki/William_Cuffay

AN ENGLISH REVOLUTIONARY   - Billy Bragg       https://www.youtube.com/watch?v=MttVdtd3zL8
THE LAUGHING SONG   - Laughing Song by William Blake set to music by Jeff Gillett       https://www.youtube.com/watch?v=M9pvcWA8fYA