Elizabeth Townshend, Viscountess Sydney English viscountess (1736–1826) Parents Lady Mary Brudenell Richard Powys Children William Augustus Townshend Frances Townshend Horatio Townshend Mary Elizabeth Townshend Harriet Townshend Georgiana Townshend John Townshend, 2nd Viscount Sydney Siblings Mary Stopford, Countess of Courtown Partners Thomas Townshend, 1st Viscount Sydney