Wedgwood was a prominent slavery abolitionist. His friendship with Thomas Clarkson – abolitionist campaigner and the first historian of the British abolition movement – aroused his interest in slavery. Wedgwood mass-produced cameos depicting the seal for the Society for Effecting the Abolition of the Slave Trade and had them widely distributed, which thereby became a popular and celebrated image. The Wedgwood medallion was the most famous image of a black person in all of 18th-century art. The actual design of the cameo was probably done by either William Hackwood or Henry Webber who were modellers in his Stoke-on-Trent factory.