Clarkson, Thomas, philanthropist, born in Wisbeach, Cambridgeshire; the great English anti-slavery advocate, and who lived to see in 1833 the final abolition in the British empire of the slavery he denounced, in which achievement he was assisted by the powerful advocacy in Parliament of Wilberforce (1760‒1846).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Clarke, William George * Classic Races