(b Hamburg, 1810; d nr. Klosters, Switz., 1873).
Ger. violinist and composer. Début at 15 with Leipzig Gewandhaus Orch. Leader of nobleman's private str. qt. in Estonia 1829–35. Appointed leader, Leipzig Gewandhaus Orch. 1836, when Mendelssohn was cond. Prof. of vn. Leipzig Cons. 1843. Visited Eng. 1839 and 1841. Advised Mendelssohn on technicalities for his vn. conc. and was soloist at f.p. (Leipzig, 13 March 1845). Taught Joachim and Wilhelmj. Took up cond. in last decade of his life. Wrote opera (withdrawn), 5 vn. concs., str. qt., and songs.