3.1 million enslaved people trafficked to the British colonies

Co-owner with 12 others (including three women) of a slaving voyage from London by the Duchess of Portland to Cape Coast Castle and Lucea/St Lucea 1792, alongside Thomas [sic] Newton and William Johnston.  Almost certainly Thomas Gordon of Newton, Gordon and Johnston, Madeira wine merchants, which evolved into Cossart Gordon & Company (still trading), although the partners in that firm were given as Francis Newton (until 1805), Thomas Gordon (until 1802) and William Johnston (until 1790).