Namesakes
Jean Chauvin
(a.k.a. Calvin) (m) 1509-1564 
Notable Philosophers and Thinkers
Melvin Calvin
(m) 1911-1997
Nobel Prize Winners 1961 (chemistry)
Notable Scientists and Inventors
Theodore "T. C." Calvin
(m)
Fictional Characters from Television 1980 Magnum, P.I.