Violoncello: Wilhelm Müller 1869-1879, Robert Hausmann 1879-1907
First Joachim-Quartett (1855-1866) in Hannover with August Lindner (1820-1878) (vc) Karl Eyertt und Gustav Eyertt (v, va) for example in 1860 first perf of Brahms' Op.18 with extras Prell (va), and Karl Herner (vc)