In 1736 Hannah Norsa, a leading singer and actress at Covent Garden, moved to Houghton Hall in Norfolk and remained there as Walpole's mistress until his death in March 1751.
She had remarried on Walpole's death but soon separated from her second husband, Hon Sewallis Shirley, a son of the 1st Earl Ferrers and Comptroller of Queen Charlotte's Household.
Lady Clinton died at Pisa, in Tuscany, in 1781, and was buried at Leghorn, "a woman of very singular character and considered half mad" (according to her friend, Selina, Countess of Huntingdon).
Walpole himself is buried in the Church of St Martin at Tours on the Houghton Hall estate.
[3] Both the Earl of Orford and his wife Baroness Clinton were succeeded in all their titles by their son George Walpole, 3rd Earl of Orford and 16th Baron Clinton (1730–1791), a celebrated falconer, who left no legitimate children and died insane.