Quaker merchant and opponent of the slave trade.
Pupil and friend of Anthony Benezet, who described him as “a valuable, religiously minded person” (1774). Toured South Carolina (1772). Published Brief Considerations on Slavery, and the Expediency of Its Abolition … (Burlington, New Jersey, 1773). Acquainted with Deborah Franklin; visited Franklin in London (1774). Returned to America briefly (1775), then spent the rest of his life in England, where he served as the London agent for the Philadelphia Library Company and lobbied for the abolition of the slave trade.
Moved from Philadelphia to Burlington (1764). Married Sarah Logan Smith (1768).