Violinist and composer; born at Vienna. His father taught him the violin, and after playing at court and also in Prague in 1803, François, or Franz as he is also called, studied composition under Forster. Having had experience as assistant manager of the Vienna Theatre, he was called to Hanover in 1818 to become leading violin in the orchestra. During 1824 and 1825 he successfully concertized in various German cities, and in 1826 became concertmaster at CarlsruheBaden, where he remained until his death. His compositions include a concerto; polonaises; themes varies; and rondos; string-quartets; and a duo concertant for two violins.