Which 3 presidents married in office?

Three U.S. presidents who married while in office are James Buchanan, Grover Cleveland, and Woodrow Wilson. James Buchanan was a bachelor during his presidency, but he had a close relationship with his niece, who acted as his hostess. Grover Cleveland married Frances Folsom in the White House in 1886, making him the only president to marry while in office. Woodrow Wilson married Edith Wilson during his presidency in 1915 after the death of his first wife.