Joseph's journal entry indicating he was "married" on May 28, 1843.
Joseph Smith, Journal, December 1842–June 1844; Book 2, 10 March 1843–14 July 1843, [225], The Joseph Smith Papers website, accessed June 14, 2022
Sunday May 28. Clouds & rain.— cold.—
5 P.M.— adjournd council met in the upper Room. atten[d]ed to ordinances and counselled and prayed that James Adams. might be deliverd from his enemies who & O. P. [Orrin Porter] Rockwell. & the twelve be prospe[r]ed in collecting means to build the Nauvoo House <Joseph— & J[ames] Adams [[were married]]>
&c adjourned to 9. oclock Monday Mornig.—