 On 21 December 1691 John Tillotson, the Archbishop of Canterbury, created him D.D.He was consecrated bishop of Chichester on 13 November 1709, and dying on 25 August 1722 at his house in Greville Street, Holborn, was buried in St. Andrew's, Holborn.Manningham printed many sermons between 1680 and his death, and was author of "Two Discourses", London, 1681, and "The Value of Church and College Leases consider'd" in Sir Isaac Newton's "Tables", 1742.