The artist is Bovin
Ekaterina Ioannovna Romanova (1691–1733) – Princess, eldest daughter of Tsar John V Alekseevich, elder sister of Empress Anna Ioannovna and Princess Praskovya Ioannovna. In 1716 she married the Duke of Karl Leopold Meklenburg-Sverinsky (1678–1747). In 1722 she returned to Russia with her daughter Anna Leopoldovna (1718–1746), the mother of the future Emperor John VI (1740–1764) and a regent during his reign (from October 17, 1740 to November 25, 1741).