Newton’s wife Mary Catlett died in 1790, after which he published Letters to a Wife (1793), in which he expressed his grief. Plagued by ill health and failing eyesight, Newton died on 21 December 1807 in London. He was buried beside his wife in St. Mary Woolnoth in London. Both were reinterred at the Church of St. Peter and Paul in Olney in 1893.
