The Armfelt family is a Swedish, a Finnish and a Russian noble family. Members of this family were awarded with the title of Baron and Count in Sweden. There were two lines of the family, one living in Sweden, which died out in 1868 and the other one in Finland, that in 1952 has regained the right of representation at Sweden's Knighthood. Notable members. Gustaf Mauritz Armfelt (1757–1814), a general, courtier and diplomat. Alexandra Zheleznova-Armfelt (1870–1933), Gustaf's granddaughter, a composer and collector of Russian folk music. See also. The National Biography of Finland.
https://en.wikipedia.org/wiki/Armfelt