George Montagu, 6th Earl of Sandwich British politician (1773-1818) (1773–1818) Parents Lady Mary Henrietta Powlett John Montagu, 5th Earl of Sandwich Children John Montagu, 7th Earl of Sandwich Catherine Montagu Harriet Mary Montagu Siblings William Augustus Montagu Henrietta Susannah Montagu Francis Charles Montagu Lady Mary Montagu Caroline Montagu Harriet Montagu John George Montagu Partners Louisa Montagu, Countess of Sandwich