Sergey Urusov
Military officer
Prince Sergey Semyonovich Urusov Russian: Сергей Семёнович Уру́сов was a leading 19th century Russian chess player; he was also a self-published amateur mathematician. His brother Dmitry Urusov was also a strong player. Wikipedia
Born: September 3, 1827, Russia
Died: November 20, 1897 (age 70 years)
Great-grandparents: Stepan Rzhevsky, Aleksandr Okunev, Sergey Urusov, and more
Parents: Anna von Markschitz and Semyon Urusov