High Quality Content by WIKIPEDIA articles! The history of the New York Giants, an American football team which currently plays in the NFL`s National Football Conference, comprises more than 80 seasons. The Giants were founded in 1925 by Tim Mara in the then five-year-old NFL. Mara owned the team until his death in 1959, when it was passed on to his sons Wellington and Jack. During their history the Giants have acquired seven NFL championships, three of which came in Super Bowls.