3.1 million enslaved people trafficked to the British colonies

Co-owner with Abraham Mendez (q.v.) of three voyages by the ship Isaac and Abraham, two to Gold Coast and two to Jamaica, between 1712 and 1714, and probably co-owner of a fourth by the same ship in 1716. Isaac da Costa Alvarenga merchant of London was party to litigation against Thomas Coalthurst (q.v.) and others in 1714.