 Many of the slaves died in captivity from such diseases as dysentery and typhoid, after being weakened by overwork.Although many educational institutions of the period, such as All Souls College, Oxford and Harvard University in Massachusetts benefitted from charitable bequests made by slave owners and slave traders, the ownership of the Codrington Plantations by the SPG and the Church of England generated considerable adverse controversy.In 1783, Bishop Beilby Porteus, an early proponent of abolitionism, used the occasion of the SPG's annual anniversary sermon to highlight the conditions at the Codrington Plantations and called for the SPG to end its connection with slave trade.