Olive Grey Frost (single, age 27) marriage to Joseph Smith.
After Smith's death, Frost would remarry, becoming the eighteenth plural wife of Brigham Young. They married in 1844, and she bore him no children. (24 July 1816 in Bethel, Maine - 6 October 1845 in Nauvoo, Illinois).
[Source: Wikipedia: List of the Wives of Joseph Smith, http://en.wikipedia.org/wiki/List_of_the_wives_of_Joseph_Smith]