1203121 Portrait of Grand Dukes Alexander Pavlovich and Constantine Pavlovich, as children, 1781 (oil on canvas) by Brompton, Richard (c.1734-83); State Hermitage Museum, St. Petersburg, Russia; (add.info.: Alexander I (23 December 1777 ??1 December 1825) reigned as Emperor of Russia from 23 March 1801 to 1 December 1825. He was the first Russian King of Poland, reigning from 1815 to 1825, as well as the first Russian Grand Duke of Finland. Constantine Pavlovich (27 April 1779 ??27 June 1831) was a grand duke of Russia and the second son of Emperor Paul I and Sophie Dorothea of W羹rttemberg. ); English, out of copyright.