He was the son of Robert Walpole, 2nd Earl of Orford and Margaret Rolle, the Baroness Clinton.[1]He was born on the 2nd of April 1730.[1]He died on the 5th of Dec 1791 insane and unmarried.[1] However, "There is documentary evidence that he had an illegitimate daughter, named Georgina Walpole, whose mother was Mary Sparrow of Eriswell"[2].
↑ "Anthony Hamond of Westacre - Correspondence". HMN 4/46/1-9 1792-1806, 1813. The National Archives (held at Norfolk Record Office). Retrieved 22 June 2013. "Letters concerning the affairs of Georgina Walpole, natural daughter of Lord Orford..."
John Burke. A general and heraldic dictionary of the peerages of England, Ireland, and Scotland, extinct, dormant, and in abeyance. England. Publisher H. Colburn & R. Bentley, 1831. Pg. 555[1]