Willoughby Bertie, fourth earl of Abingdon (1740–1799) published some ‘Observations on the African-Slave Trade Bill' in The Times. Claiming that the dissolution of parliament prevented him from delivering the speech to the house, Abingdon addressed the issue of abolition which he opposed, associated as it was in his mind with the movement for the repeal of the Test and Corporation Acts.

See The Times, 18 April 1791.