Agnes Moulton Coolbrith (single, age 31) marriage to Joseph Smith
Widow of Smith's brother Don Carlos. (1808-1876) She had been married to Don Carlos Smith, Joseph's younger brother. After Don Carlos died in 1841, Coolbrith married Joseph in 1842. Coolbrith was the mother of Ina Coolbrith, who became the first poet laureate of California.
[Source: Wikipedia: List of the Wives of Joseph Smith, http://en.wikipedia.org/wiki/List_of_the_wives_of_Joseph_Smith]