George Washington (1732-1799)
The first President of the United States. Superman meets General George Washington and facilitates his famous crossing of the Delaware River by breaking up the ice on the river, during a time-journey to the year 1776 (S No. 48/2, Sep/Oct 1947: "Autograph, Please!").
Superman meets George Washington a second time, during a time-journey to the year 1779, while searching for an explanation behind a series of murder attempts on the lives of members of the Kent family (see Ely Kent) (Act No. 132, May 1949: "The Secret of the Kents!"). (TGSB)
The history of the George Washington depicted in Action Comics No. 399 was that of a different reality and the man lived a very different life (Apr 1971: "Superman, You're Dead...Dead...Dead!"). (See Superman I, Superman II, and Superman III)