Pierre de Fermat was born in the early 1600's and died in 1665. Pierre was a French lawyer by profession, but, he is best remembered for his pioneering of infinitesimal calculus. Many of Pierre de Fermat's theories are in debate as to whether he should be given credit. However, this is only because Pierre de Fermat's theories could not be proven successfully conclusive until many years later as mathematics were more fully developed.
in Castres County, France