Sherman, who wrote the introduction to Harriet Beecher Stowe's hugely influential Uncle Tom's Cabin. The novel was partly based on Josiah Henson, whose escape to freedom in Britain was assisted by the philanthropist Samuel Morley, who is buried in the cemetery. The Rev. Joseph Ketley, a Congregational missionary and abolitionist in Demerara, is also interred here, as is Rev. Dr John Morison, patron of the escaped slave and influential African-American autobiographer Moses Roper. Recently rediscovered is the grave of Olaudah Equiano's daughter Joanna Vassa, as he was a well-known former slave who worked for abolition. Jamaican emancipation is represented directly by the Rev. Samuel Oughton and the Rev. Thomas Burchell, who only narrowly escaped death at the hands of the planters; and their underlying Baptist support by Nathaniel Rogers M.D. A deacon at the Burchell Baptist church, the African Samuel Sharpe, became a Jamaican hero. Aaron Buzacott, the second Secretary of Anti-Slavery International, originally known as the Anti-Slavery Society, is buried here. At Abney Park Cemetery there are also some of the early settlers in Britain from the four corners of the world, such as the African, Thomas Caulker, the son of the King of Bompey (now Sierra Leone), who signed an anti-slavery agreement that became part of an Act of Parliament in the 1850s; and Leota, a native of the Samoa Islands whose life in London was due to the work of the London Missionary Society who sought to build schools and bring scripture to the inhabitants of the South Seas. Abney Park is one of the main burial places of 19th-century missionaries; here, for example is the burial place of William Ellis, John Williams' wife and son, Dr Walter Henry Medhurst, and Edward Stallybrass. Also Sarah Buzacott, the wife of Aaron Buzacott the elder, who was a teacher at the London Missionary Society college at Rarotonga in the South Seas. Many nonconformist divines are also buried here, for example Dr Alexander Fletcher, 'The Children's Friend'. The Afro-Caribbean Harlem Renaissance writer and journalist Eric Derwent Walrond (1898–1966) is buried at the cemetery. The evangelist Emily Gosse is buried in a simple grave near Dr Watts' Mound. Close to Church Street is the burial of one of the cemetery's early director and trustees, one of the first two Members of Parliament for Hackney Sir Charles Reed. Close by lies his father Dr Andrew Reed (1788–1862), a student of Rev. George