George Herbert Walker's great-grandson graduated from where in 1968?
George Herbert Walker George Herbert "Bert" Walker Sr. (June 11, 1875 – June 24, 1953) was an American banker and businessman and the maternal grandfather of President George H. W. Bush and a great-grandfather of President George W. Bush.
W. Marvin Watson William Marvin Watson (born June 6, 1924) was an advisor to U.S. President Lyndon B. Johnson and was Postmaster General from April 26, 1968, to January 20, 1969.