The private life of the younger Frederick, who remained single, became the focus of a vicious blackmail attempt by the other brothers, according to a sworn deposition given by Bill Koch in 1982. In his deposition, Bill described an emotionally wrenching confrontation in the mid-1960s in which he, Charles, and David tried to force their older brother Frederick, who they believed was gay, to relinquish his claim to a share of the family company, or else they threatened to expose his private life to their father.
