Sophia Churchill (died 1797) (1756–1797) Parents Lady Maria Walpole Charles Churchill Children Lady Georgiana Mary Walpole Lady Maria Walpole Ann Walpole Lady Sophia Anne Walpole Lady Catharine Long Frederick Charles Walpole Lady Harriet Walpole Charlotte Walpole John Walpole Horatio Walpole, 3rd Earl of Orford Siblings Henry Churchill Horatio Churchill Mary Churchill Charles Churchill Partners Horatio Walpole, 2nd Earl of Orford