Original: On September 24, 1868, Robert Lincoln married the former Mary Eunice Harlan (September 25, 1846 - March 31, 1937), the daughter of Senator James Harlan and Ann Eliza Peck of Mount Pleasant, Iowa.
Simplified: On September 24, 1868, Robert Lincoln married Mary Eunice Harlan (September 25, 1846 - March 31, 1937).