Mormon History, Jan 22, 1846

Willard Richards: Sealed to Sarah Longstroth 22 January 1846. Four children: Willard Brigham, Joseph Smith, Sarah Ellen, and Paulina.

[source: Cook, Lyndon W., The Revelations of the Prophet Joseph Smith: A Historical and Biographical Commentary of the Doctrine and Covenants, Seventy's Mission Bookstore, Provo UT, 1985, http://amzn.to/RevelationsofJosephSmith]