Marston Morse — American Mathematician born on March 24, 1892, died on June 22, 1977
Harold Calvin Marston Morse was an American mathematician best known for his work on the calculus of variations in the large, a subject where he introduced the technique of differential topology now known as Morse theory. In 1933 he was awarded the BĂ´cher Memorial Prize for his work in mathematical analysis... (wikipedia)