Dmitry Grave
Russian mathematician
Dmitry Aleksandrovich Grave was a Russian and Soviet mathematician.
Naum Akhiezer, Nikolai Chebotaryov, Mikhail Kravchuk, and Boris Delaunay were among his students. Wikipedia
Born: September 6, 1863, Kirillov, Russia
Died: December 19, 1939 (age 76 years), Kyiv, Ukraine