Joseph Ketley, who worked towards the abolition of slavery and promoted Christian teaching amongst the African population and the native Indian tribes of the Essequibo River in the 1830s and 1840s, attended the Anti-Slavery Convention in London on 12 July 1840.
Joseph Ketley (1802-1875) was a mid-nineteenth century Congregational missionary and abolitionist in Guyana, the former British colony of British Guiana which was known as Demerara and Essequibo at the time when his mission was established. In the 1830s and 1840s Joseph Ketley worked towards the abolition of slavery and promoted Christian teaching amongst the African population and the native Indian tribes of the Essequibo River. On 12 July 1840 he attended the Anti-Slavery Convention in London. 
