d’Os. Isabelle
Isabella d’Os. (*?-†?) – active in the middle period of the 19th century, probably in Warsaw, author of several piano pieces, including: “L’Esperence”, Melodie en forme de Mazourka pour piano,“La Plainte”, Melodie en forme de Mazourka, and “Le Regret“. The first two pieces are in the collections of the library of the Warsaw Musical Society, and in the form of microfilms in the National Library. The last item has not been preserved as sheet music.