Claim: Felix Dreyschock was a German pianist known for his works for piano, violin, etc and he is Alexander Dreyshock's nephew (a Czech pianist and composer).
Evidence: Felix Dreyschock (27 December 1860 in Leipzig – 1 August 1906 in Berlin) was a German pianist, nephew of Alexander Dreyschock. He wrote major and minor works for piano, violin, vocals, orchestra, etc. Alexander Dreyschock (15 October 1818 – 1 April 1869) was a Czech pianist and composer.