In 1814 Mary's oldest daughter from her first marriage died at the age of nine and, in the same year, the only son of her second marriage died as a baby.
Sa 1814 Mary's oldest anak na babae mula sa kanyang unang kasal namatay sa edad na siyam na at, sa parehong taon, ang tanging anak na lalaki ng kanyang ikalawang kasal namatay bilang isang sanggol.