Gotthard Johann von Knorring (1744 or 1746 Russian: ?????? ????????? ???????? (Bogdan Fyodorovich Knorring) was a Baltic German who was a soldier in the Russian Army, rising to become a general.
This is an illustration from the book Russian portraits of the 18th and 19th centuries: Edition of Grand Duke Nicholas Mikhailovich of Russia, printed in 1905-1909 as a catalogue of a 1905 exhibition. All images are in the Public Domain due to age.