William Wilberforce, English anti-slavery campaigner, 1828 (1965). [Getty Images]

William Wilberforce, English anti-slavery campaigner, 1828 (1965). Entering Parliament in 1780, Wilberforce (1759-1833) campaigned tirelessly for the abolition of slavery. His efforts contributed to a bill being passed in 1807 outlawing slavery in the British West Indies, and in 1833, a month after his death, the Abolition of Slavery Act was passed by Parliament. Wilberforce also campaigned on other issues, including penal reform and help for the destitute. Found in the collection of the National Portrait Gallery, London. A print from The Slave Trade and its Abolition, edited by John Langdon-Davies, Jonathan Cape, London, 1965. (Photo by The Print Collector/Print Collector/Getty Images)

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