Keyserling is the surname of several members of the noble House of Keyserlingk: Alexander Keyserling, Russian geologist, paleontologist, botanist and zoologist Eugen von Keyserling, German arachnologist Hermann Graf Keyserling, German philosopher Eduard von Keyserling, German writer H.H. Keyserling, Russian naval officer, mariner and whaler in the Far East Leon Keyserling, American economist Arnold Keyserling, German philosopher, son of Hermann. Wikipedia