Bonham's lot notes has this, "Lady Susan was the only daughter of Colonel Henry Watson, Chief Engineer in Bengal. With an annual income of £6,000, she married George Evans, 4th Baron Carbery (1766–1804), an Irish peer and politician in 1792 at St. George's Church in Hanover Square, London. His Irish peerage did not entitle him to a seat in the House of Lords but he was instead elected to the House of Commons for Rutland in 1802; a seat he held until his early death two years later from the bursting of a blood-vessel.Two years later, Lady Carbery married another Irish peer and politician, George Evans-Freke (1772-1829), son of Sir John Evans-Freke, 1st Baronet and Lady Elizabeth Gore of Bulgaven Hall, County Limerick. Baroness Carbery had no children from either marriage. The essayist, De Quincey, described her as, 'a religious woman of very fine presence and figure, having masculine and austere understanding.'"