In 1816, he was appointed to the missionary facilities at Kissy, Sierra Leone. This village had been founded to accommodate liberated enslaved Africans who had been freed by the Royal Navy's West Africa Squadron. In 1818, Wenzel ran a school at which 74 boys and 72 girls attended.
- Walker, Samuel Abraham (1845). Missions in Western Africa, Among the Soosoos, Bulloms, &c: Being the First Undertaken by the Church Missionary Society for Africa and the East. Dublin: William Curry.
- "Chronological List of Protestant Missionary Stations". Missionary Herald. XIV: 165. 1818. Retrieved 17 May 2016.
- Wilson, Ellen Gibson (1980). John Clarkson and the African Adventure. London: Macmillan Press.
- Clifford, Mary Louise (2006). From Slavery to Freetown: Black Loyalists After the American Revolution. Jefferson, North Carolina: McFarland and Co. p. 202.