Possible Clues:

• William H --, 27th US President
• Roosevelt successor
• Electee of 1908
• Only U.S. president also to serve as chief justice
• Secretary of war under Theodore Roosevelt
• U.S. president, 1909-13
• President who left office in 1913
• First president to take up golf
• Eisenhower's rival for the 1952 nomination
• Our heaviest president