Grigory Vyrubov

Grigory Vyrubov in Masonic attire with the insignia of the French Masonic Order

Grigory Nikolayevich Vyrubov, or Grégoire Wyrouboff (Russian: Григорий Николаевич Вырубов; 31 October 1843, in Moscow – 30 November 1913, in Paris) was a Russian Empire Positivist philosopher and historian of science.[1]