Henrietta Susannah Montagu Peerage person ID=692347 (1777–1825) Parents Lady Mary Henrietta Powlett John Montagu, 5th Earl of Sandwich Children Maria James, Countess of Buchan Siblings William Augustus Montagu Francis Charles Montagu George Montagu, 6th Earl of Sandwich Lady Mary Montagu Caroline Montagu Harriet Montagu John George Montagu Partners William James