Beresford, Henry de la Poer, third marquess of Waterford (1811–1859), reprobate and landowner, was born on 26 April 1811 at 5 Mansfield Street, Marylebone, Middlesex, the second son of Henry de la Poer Beresford, second marquess of Waterford (1772–1826), and his wife, Lady Susanna Hussey Carpenter (1784–1827)...