The marriage of Grover Cleveland and Frances Folsom, the daughter of a deceased law partner of Cleveland's, was different in that it was Cleveland's first (and in the end, only) marriage. He had been elected for in 1884 as a bachelor, age 47, the only bachelor president since James Buchanan. Unlike Buchanan, Cleveland didn't remain unmarried, and in a ceremony in the White House, he became the husband of Frances and the first and only president to be married in the executive mansion.
At 49, Grover was 27 years older than Frances, and they were married for 22 years until he died in 1908. She died in 1947, having married again in 1913 to Thomas Preston Jr., an archaeology professor at Princeton. Grover and Francis had five children, including two born during their father's second term in office. Their youngest child, Francis Grover Cleveland, died only in 1995.