Josephine Koberwein. Joseph Fricero (French, 1807-1870).
Youzia (Joséphine) Koberwein (1825-1923) was officially the daughter of Iosif Vassiévitch Koberwein, state councilor assigned to the Chancery and his wife Marianne Koberwein. In fact, the father was Nikolai I Pavlovich Romanov, Tsar of Russia.
She married Joseph Fricero in 1849. Both were painters.