My paper research of mathematicians is on Pierre De Fermat. Pierre de Fermat was born in August 17, 1601 near Beaumont-de-Lomagne in a small town in south part of France. Pierre de Fermat father was a wealthy leather merchant; his father did not let Pierre go to school so he was educated at home. Pierre had a family he had a brother name Clement and two sisters their name were Louise and Marie. His uncle and godfather were also leather merchants, Pierre father also had a second job he was the second consul of Beaumont-de-Lomagne. His mother was the one to bring the social of status of the parliamentary noblesse de la robe (dress) of the family. Pierre father thought his son was interested in math, but actually Pierre did not show that much interest in mathematics. …