3479578 Church Mission Society, 1799; (add.info.: Meeting at the church Missionary Society was founded. The Society was founded in Aldersgate Street in the City of London on 12 April 1799. Most of the founders were members of the Clapham Sect, a group of activist evangelical Christians. They included Henry Thornton MP and William Wilberforce MP. The founders of CMS were committed to three great enterprises: abolition of the slave trade, social reform at home and world evangelisation.); Universal History Archive/UIG; out of copyright.