Horatio Walpole, 2nd Earl of Orford British politician (1752–1822) Parents Lady Rachel Cavendish Horatio Walpole, 1st Earl of Orford Children Lady Georgiana Mary Walpole Horatio Walpole, 3rd Earl of Orford Lady Catharine Long Ann Walpole Lady Harriet Walpole Charlotte Walpole Lady Maria Walpole Lady Sophia Anne Walpole John Walpole Frederick Charles Walpole Siblings George Walpole Lady Mary Walpole Partners Sophia Churchill Catherine Tunstall