Henri Francois Riesener.
Portrait of Josephina Fridrix.
1813. Oil on canvas. 115 x 88. The Hermitage, St. Petersburg, Russia. More.
(1780s-1824) was a mistress of Grand Duke Constantin Pavlovich (1779-1831), son of the Emperor Paul I. She had a son by him, Pavel Konstantinovich Alexandrov (1808-1857). In 1816, she received the Russian name of Uliana Mikhailovna Alexandrova. In 1820 she married A. S. Weis