Joseph C. Kingsbury recalls being married to Sarah Ann Whitney and living with the Whitney family in Nauvoo.
Joseph C. Kingsbury, Autobiography and Journal, 2, typescript, CHL, MS 6571
And on 29 April 1843 I according to Pres. Joseph Smith & Council & others, I agreed to stand by Sarah Ann Whitney as though I was supposed to be her husband & pretended marriage for the purpose of shielding them from the enemy. (She was wife of the Prophet Jos. Smith)mock ceremony of marriage before the enemy & for the purpose of bringing about the purposes of God in these last days.
. . .
I remained with Newel K. Whitney until 23 July 1843 & left Nauvoo, the City of the Saints on a Mission in the lew England States,