Ivan Bubnov

Russian mathematician (1872–1919).

Born January 18th, 1872 in Nizhny Novgorod.

Died March 13th, 1919 at 47 years old in Saint Petersburg (typhoid fever).

Occupations
engineer, marine engineer, mathematician, military personnel, submariner
Wikipedia

Death is so terribly final, while life is full of possibilities. George R.R. Martin