John Beresford, 4th Marquess of Waterford Irish Marquess (1814-1866) (1814–1866) Parents Susanna Carpenter Henry Beresford, 2nd Marquess of Waterford Children Lord Marcus Beresford Charles Beresford John Beresford, 5th Marquess of Waterford Lord William Beresford Delaval James de la Poer Beresford Siblings Henry Beresford, 3rd Marquess of Waterford Lady Sarah Beresford Partners Christiana De La Poer Beresford, Marchioness of Waterford