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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

Count your age by friends, not years. Count your life by smiles, not tears. John Lennon