(Oliver Cowdery) : Born in Wells, Vermont. In 1832 he married Elizabeth Ann Whitmer, daughter of Peter Whitmer, Sr. Only one of their six children lived to adulthood. Cowdery was brother-in-law to Brigham Young's brother Phineas and to Book of Mormon Witnesses David Whitmer, Jacob Whitmer, and Peter Whitmer, Jr. He was a third cousin to the Prophet Joseph Smith.
[Source: Van Wagoner, Richard and Walker, Steven C., A Book of Mormons, http://amzn.to/newmormonstudies]