Lady Diana Herbert (1790-1841) (1790–1841) Parents Elizabeth Beauclerk George Herbert, 11th Earl of Pembroke Children James Agar, 3rd Earl of Normanton Charles Welbore Herbert Agar Lady Mary Agar Herbert Welbore Ellis Agar Siblings Charles Herbert Robert Herbert, 12th Earl of Pembroke George Herbert Mary Caroline Brudenell-Bruce, Marchioness of Ailesbury Lady Georgiana Herbert Catherine Murray, Countess of Dunmore Lady Elizabeth Herbert Sidney Herbert, 1st Baron Herbert of Lea Lady Emma Herbert Partners Welbore Ellis Agar, 2nd Earl of Normanton