The Grand Duchesses Maria (1819-1876), afterwards Princess of Leuchtenberg, and Olga (1822-1892), afterwards Queen of Wurtemberg, daughters of Nicholas I, Tsar of Russia
_-_The_Grand_Duchesses_Maria_(1819-1876),_afterwards_Princess_of_Leuchtenberg,_and_Olga_(1822-1892),_af_-_RCIN_408911_-_Royal_Collection.jpg "The Grand Duchesses Maria (1819-1876), afterwards Princess of Leuchtenberg, and Olga (1822-1892), afterwards Queen of Wurtemberg, daughters of Nicholas I, Tsar of Russia")
1839
by unknown
depicting Olga Nikolaevna of Russia
WIKIDATA️