Wow!
Naprawdę ciekawa rzecz! Zanim jednak pokusimy się o identyfikację munduru, poszukałem czegoś o samym autorze, bo bardzo zaintrygowało mnie to "romantyczne" tło (o ile nie jest to oczywiście fantazja). Okazuje się jednak, że równie dobrze może to być Hiszpania, Włochy a nawet Anglia (tam też byli nasi jeńcy z San Domingo i spod Maidy). Tu jest krótki biogram delikwenta. Zwracam uwagę na "princess Poniatowska" (Teresa Tyszkiewiczowa?)
Cytuj:
Pierre Charles Cior (1769 Paris - ca. 1840 ibidem) was a pupil of Bazil. At the Salon of 1796 he exhibited a frame containing several miniatures, and, in 1799, two other miniatures. It was thirty two years later in 1831 that Cior again participated at the Salon, making his final reappearance in 1838. The artist travelled a lot throughout his career. The details of his itineraries are unknown, yet it is known that he was appointed a Painter in Miniature to the King of Spain, and that he also worked quite a lot at the Russian Court, where, among others, he did the portraits of the Emperor Paul I of Russia and his wife, of Prince Kourakin and Princess Poniatowska. He also painted Prince Eszterhazy, the Queen of Holland, the Duke of Luxemburg, Louis XVIII and numerous other personalities.
Szkoda, że nie ma informacji kto zacz? 
