According to her genealogical sketch, she was married to Count Ivan Alexeevich Count Musin-Pushkin and then Alexander Mikhailovich Gorchakov. The Russian-language Wikipedia article for Alexander Mikhailovich Gorchakov has this (Google translated), "On 17 July 1838, 40-year-old Gorchakov married 37-year-old Maria Aleksandrovna Musina-Pushkina (Urusova) (1801-1853), the daughter of A. M. Urusov; widow of I. A. Musin-Pushkin; and the niece of his superior D. P. Tatishchev. (She was) a Moscow beauty who was fascinated by Pushkin, thus acquiring a stepdaughter and four stepchildren, including Alexander Musin-Pushkin. For the sake of this marriage, he had to retire and for some time and leave the diplomatic service. They had sons Michael (1839-1897) and Constantine (1841-1926)."
From Wikimedia.
Countess Pushkina wears a simple white dress decorated with a lace modesty piece and cuffs, and an order bow with a jeweled monogram (AF?).
Keywords: 1820, Maria Urusova, Maria Musina-Pushkina, Maria Gorchakova, Мария Александровна Урусова, Мария Александровна Горчакова, Urusov family, Musin-Pushkin family, Gorchakov family, family, Princess, Countess, Russian, braided coiffure, earrings, floral headdress, Empire bodice, square neckline, lace modesty piece, lace, order bows, quarter length full sleeves, lace tight cuffs, waist band, Empire waistline, close skirt, gloves, wrap