When in London, of which he became an alderman, he attended the Independent meeting-house in Leadenhall Street, over which John Owen presided, and continued a member under successive ministers until his death.
Isaac Watts, who resided with the Hartopps for five years at Stoke Newington, preached their funeral sermons.
His son and successor, John (1680?–1762), with whom the baronetcy became extinct, assisted Lady Mary Abney in erecting a monument over Watts's remains in Bunhill Fields.
Anne married Joseph Hurlock, and their only child was Anne Hurlock "eventually heir and representative of the Hartopps"[2] One of Sir John Hartopp's daughters was Frances, who married Nathaniel Gould (1661–1728), merchant, politician, shipbuilder, and a Governor of the Bank of England from 1711 to 1713[3] at the time when the South Sea Company was founded.
[5] Mary Gould married Sir Francis St John, of Thorpe Hall (Peterborough),[2] a descendant of the Roundhead Oliver St John[6] This article incorporates text from a publication now in the public domain: Stephen, Leslie; Lee, Sidney, eds.