the next year maria theresa gave birth to a daughter, sophie, who was known as "mademoiselle" as the most senior unmarried princess at court. she died at the age of seven in 1783. her second son, charles ferdinand, duke of berry, was born in 1778. her last child, marie thérèse d'artois, presumably named after her mother, died while the court was at choisy-le-roi at the age of just 6 months.