The Runge-Kutta methods were developed by M.W. Kutta and a Russian mathematician, physicist, and Spectroscopist that was born in 1856.
 These methods were developed around 1900 by the German mathematicians C. Runge and M. W. Kutta. 
Carl David Tolm Runge (] ; 30 August 1856  3 January 1927) was a German mathematician, physicist, and spectroscopist. 
