This chapter discusses the radical Irish Buddhist monk U Dhammaloka’s trial for sedition in Moulmein and subsequent court appeal in Rangoon, setting these in the wider context of Burmese, Indian, and imperial politics. It explores the reasons for his apparent flight to Australia after his binding-over was completed, attempts by the Burmese police to pursue him there, and the report of his death in Melbourne. It also explores his connections with Australian Theosophy and temperance and a possible link to Thursday Island. The chapter reflects on Dhammaloka’s significance in terms of his personal consistency as a Buddhist, the challenge social movements in his time faced in trying to see beyond the horizon of colonialism, and the plebeian cosmopolitanism exemplified by Dhammaloka himself, which would soon become forgotten with the rise of ethnically based nation-states.