Nauvoo, Illinois. Joseph Smith took his children on a pleasure ride in a carriage. (1)
-- May 1, 1843
Nauvoo, Illinois. Monday, Joseph Smith paid Lucien Woodworth monies toward the erection of the building of a hotel named the Nauvoo House. (1)
-- May 3, 1843
[Lucy Mack Smith] John Taylor and Wilford Woodruff issue the first number of the new Nauvoo Neighbor. (2)
-- May 17, 1843
Ramus, Illinois. Joseph Smith received Doctrine & Covenants 131, a revelation containing requirements for obtaining the celestial degree of glory. (1)
-- May 18, 1843
Carthage, Illinois. Joseph Smith dined with Judge Stephen A. Douglas and prophesied that the Judge would aspire to the presidency of the United States, but that if he ever turned against the Saints, he would feel the hand of the Almighty. (1)
-- May 19, 1843
Richmond, Indiana. Joseph Smith wrote a letter to his wife, Emma Smith. (1)
-- May 20, 1843
Nauvoo, Illinois. Joseph Smith sent an explanation of the word Mormon to the Church newspaper Times and Seasons in response to erroneous views held by men that profess to be learned. (1)
-- May 28, 1843
Joseph and Emma Smith sealed for time and eternity. (3)
[Joseph Smith] Nauvoo, Illinois. Joseph and Emma Smith were sealed as husband and wife for time and eternity. (1)
[Joseph Smith] Sealed to Emma for time and eternity. (4)
[Lucy Mack Smith] Sealed to Emma for time and eternity. (5)
[Lucy Mack Smith] Emma is sealed to Joseph and admitted to the prayer circle. She is endowed sometime before autumn. (2)
-- During 1843 May
Missionaries called to first non-English-speaking mission in the Church, island of Tubuai (now in French Polynesia). (6)
Footnotes:
1 - BYU Studies Journal, volume 46, no. 4: A Chronology of the Life of Joseph Smith
2 - Anderson, Lavina Fielding, Editor, Lucy's Book: A Critical Edition of Lucy Mack Smith's Family Memoir, 2001, Signature Books
3 - Church of Jesus Christ of Latter-day Saints, Chronology of Church History, http://scriptures.lds.org/chchrono/contents
4 - Joseph Smith Papers, Timeline of Events, http://josephsmithpapers.org/TimelineOfEvents.htm
5 - Proctor, Scott and Maurine Jensen, editors, History of Joseph Smith by His Mother: Revised and Enhanced
6 - Hemidakaota, "Church Chronology from 1800-2000," http://www.lds.net/forums/scripture-study-forum/12108-church-chronology-1800-2000-part-1-a.html#post214550
Mormon History Timeline /Chronology
http://lds-church-history.blogspot.com/