William Frederick Wyndham English diplomat (1763–1828) Parents Alicia Wyndham, Countess of Egremont Charles Wyndham, 2nd Earl of Egremont Children William Wyndham Julia Wyndham Arthur Wyndham George Wyndham, 4th Earl of Egremont Julia Wyndham Laura Wyndham Frances Wyndham Siblings Charles William Wyndham George Wyndham, 3rd Earl of Egremont Frances Marsham, Countess Romney Percy Charles Wyndham Elizabeth Herbert, Countess of Carnarvon Harriet Brühl Partners Julia de Smorzewska, Countess de Spyterki Frances Mary Harford