Olga's Gallery
Fedor Rokotov.
Portrait of an Unknown Man in a Cocked Hat.
1770s. Oil on canvas. The Tretyakov Gallery, Moscow, Russia. More. 
Unknown Man in a Cocked Hat. Many historians consider this man to be Bobrinsky, Alexey Grigoryevich (1762-1813), count after 1796, bastard son of Catherine II and Gregory Orlov