'Known issue of John and Hellen: ... John, b. ca. 1610 (evidently the John, son of John Jenkes, bapt. 6 April 1611 at nearby St. James Clerkenwell, Middlesex, according to The Publications of the Harleian Society, v. 9, p. 61), of the Tower of London, cutler; m. 17 July 1634 Hannah Glinn. ...'