Who was nicknamed "The Gipper" and was portrayed by Ronald Reagan in the film Knute Rockne, All American?
Knute Rockne, All American:  It stars Pat O'Brien portraying the role of Rockne and Ronald Reagan as player George Gipp, a.k.a. "The Gipper," as well as Gale Page, Donald Crisp, Albert Bassermann, Owen Davis, Jr., Nick Lukats, Kane Richmond, William Marshall and William Byrne.
i don't know