a Refutation of Certain Doctrinal Errors Generally Adopted in the Christian Church. Although this work contained no explicit mention of slavery, it does suggest Wedderburn's future path in subversive and radical political action. Wedderburn was sufficiently well known to be the subject of at least one satirical print by the caricaturist George Cruikshank, who in 1817 published "A Peep into The City of London Tavern" in which Wedderburn is caricatured alongside the social reformer Robert Owen. The central figure in Cruikshank's 1819 print The New Union Club may also be a caricature of Wedderburn. Politically influenced by Thomas Spence, Wedderburn was an impassioned speaker and became de facto leader of the Spencean Society in 1817 after the nominal leaders were arrested on suspicion of high treason. Wedderburn published fiery periodicals advocating republican revolution, using violence if necessary, to bring about redistribution of property in Britain and the West Indies. In 1824, he published an anti-slavery book entitled The Horrors of Slavery, printed by William Dugdale and possibly coauthored by George Cannon. To promote his religious message, he opened his own Unitarian chapel in Hopkins Street in Soho, London. After, he began to question Christian tenets. He was later associated with the freethought movement, including popular deists and atheists such as Richard Carlile. He also campaigned for freedom of speech. Prison Robert Wedderburn served several prison terms. According to Peter Linebaugh (2000) it is recorded that Wedderburn "did time in Cold Bath Fields, Dorchester, and Giltspur Street Compter prisons for theft, blasphemy, and keeping a bawdy house." While imprisoned, alongside his associate Richard Carlile, Wedderburn wrote a letter to Francis Place. In 1831, at the age of 68, he was arrested and sent to Giltspur Street Prison and sentenced to two years in jail, having been convicted of keeping a brothel. On his release he appears to have gone to New York City, where a newspaper records his involvement in a fraud case and refers to him as "a tailor and breeches maker, field preacher, anti-bank deposite politician, romance writer, circulating librarian, and ambulating dealer in drugs, deism, and demoralization in general". He returned to London shortly after. His last mention in the historical record was in March 1834 when a Home Office informer listed him as present among the congregation at the Theobald's Road Institute. Death and legacy The exact year of his death is unknown, although it appears to