Russian financier and philanthropist; born at Yurburg, near Kovno, in 1821; died at Königsberg, Prussia, May 21, 1893. He settled at Königsberg in 1866. At the out-break of the persecutions of the Jews in Russia in the year 1881, Feinberg organized a committee of relief for the Jewish emigrants passing through Königsberg, and took a leading part in the conference of the Alliance Israélite Universelle held in Berlin in that year. A year later Feinberg was elected by the Lithuanian Jews to represent them at the conference of Jewish notables summoned by Alexander III. at St. Petersburg.