ALABAMA
In 1869 Princeton and Rutgers split the college football National Championship. The first consensus (Coaches' and Media polls) National Championship was Oklahoma in 1950.
Tennesse Volunteers
Oklahoma
Ohio State Buckeyes
Auburn and Ohio state
No.
According to the College Football Data Warehouse, the University of Wisconsin Badgers football team has not yet won a national championship.
Notre Dame
Clemson 1982
5 AND 7
Georgia, with a 12-0 record.