SONNENFELD, SIGISMUND (1847–1929), journalist, philanthropist, and communal leader, born in Vagujhely (then in Hungary). After graduating in philosophy, Sonnenfeld joined the staff of Pester Lloyd in Budapest. In 1890 he settled in Paris where he became director of the philanthropic institutions of Baron de *Hirsch; as such he took part in planning relief for East European Jewry. From 1891 to 1911 he was a director of ica (*Jewish Colonization Association), undertaking several study tours in Russia, Romania, and Argentina. He also was a member of the central committee of the *Alliance Israélite Universelle.
Wininger, Biog, 5 (1930), s.v.