Lady Mary Agar (1822-1904) (1822–1904) Parents Lady Diana Herbert Welbore Ellis Agar, 2nd Earl of Normanton Children Edward Nelson, 5th Earl Nelson Lady Alice Nelson Charles Nelson Lady Constance Nelson Lady Mary Nelson Thomas Nelson, 4th Earl Nelson Albert Nelson Lady Edith Nelson Herbert Nelson, Viscount Trafalgar Siblings Herbert Welbore Ellis Agar Charles Welbore Herbert Agar James Agar, 3rd Earl of Normanton Partners Horatio Nelson, 3rd Earl Nelson