To be married in the White House* He was obviously the only president to serve two separate terms in Office.
Grover is the only president to ever be a president twice.
1884 (won), 1889(lost) and 1892(won)
Because he was the first and only president to serve 2 nonconsecutive terms
He died
He died at his home in Princeton, New Jersey, on June 24, 1908.