Her genealogical sketch is here. She was born in the Ukraine.
From a Pinterest and Google search. Also posted to The Bustle Periods - 1870 to 1890 Album here.
Bands of multi-colored scales adorn the cuffs, revers, and cuirasse hem of Princess Marie’s dress. She also wears some impressive jewelry.
Keywords: 1881, Siemiradzki, Marie Lubomirska, Marie Lannes de Montebello, baronne de Montebello, Baroness of Montebello, Lubomirska family, Lannes de Montebello family, Baroness, curly coiffure, jeweled floral headdress, earrings, necklace, chemise, square neckline, lace modesty piece, lace collar, cuirasse bodice, revers, stomacher, three quarter length close sleeves, cuffs, lace engageantes, bracelets, close skirt, folding fan, wrap