Marian Rejewski

Polish mathematician and cryptologist (1905–1980).

Born January 16th, 1905 in Bydgoszcz. [ref]

Died February 13th, 1980 at 75 years old in Warsaw (myocardial infarction).

Occupations
cryptologist, inventor, mathematician
Wikipedia

It matters not how a man dies, but how he lives. The act of dying is not of importance, it lasts so short a time. Samuel Johnson