Nauvoo, Illinois. Joseph Smith went before the municipal court in the case of Francis M. Higbee v. Joseph Smith. (1)
-- May 9, 1844
Nauvoo, Illinois. Joseph Smith blessed Elders Wilford Woodruff and George A. Smith before their journeys to the eastern United States. (1)
[Lucy Mack Smith] The Twelve are called on missions in Joseph's presidential campaign. (2)
-- May 15, 1844
Nauvoo, Illinois. Joseph Smith was visited at home by Josiah Quincy, former mayor of Boston, and Charles Francis Adams, son of United States president John Quincy Adams. (1)
-- May 17, 1844
Nauvoo, Illinois. Joseph Smith was nominated as a United States presidential candidate for the National Reform Party at the Illinois state convention. (1)
[Joseph Smith] Nominated as United States presidential candidate. (3)
[Lucy Mack Smith] Nominated for U.S. presidential candidate at Nauvoo convention. (4)
[Lucy Mack Smith] At a "state convention" in Nauvoo, Joseph's candidacy is again affirmed by men representing the various states. (2)
-- May 18, 1844
[Lucy Mack Smith] James Blakesley, Francis M. Higbee, and Austin Cowles are excommunicated. (2)
-- May 23, 1844
Nauvoo, Illinois. Joseph Smith prophesied to his brother Hyrum Smith that their enemies would lie about him the same as they had about Joseph. (1)
Nauvoo, Illinois. Joseph Smith spoke with the Sac and Fox Indians who had arrived the previous day. (1)
[Lucy Mack Smith] William Law accuses Joseph of adultery/polygamy. Joseph H. Jackson and Robert Foster swear a writ against Joseph on 24 May for false swearing. For the next few weeks, Joseph and Hyrum Smith engage in a flurry of accusations and counteraccusations with William and Wilson Law, charging each other with counterfeiting, sexual immorality, and other illegal acts, including alleged attempts by both Joseph and William to hire Joseph H. Jackson to kill the other. (2)
-- May 26, 1844
[Lucy Mack Smith] In a public discourse, "Joseph Smith denied specific rumors [about polygamy] but did not deny that he had had a revelation on plural marriage and had begun that practice. Afterward the Expositor published details of the revelation, but again the Prophet said nothing publicly to refute it" (R. L. Anderson, "Joseph Smith's Final," 331n12). (2)
-- May 27, 1844
Nauvoo, Illinois. Joseph Smith, accompanied by friends, went to Carthage, Illinois, to attend the circuit court in answer to certain indictments against him. (1)
-- May 31, 1844
Nauvoo, Illinois. Joseph Smith administered to Sister Richards, who was sick; and he issued a warrant for the arrest of Thomas B. Johnson for threatening the peace of the city. (1)
-- During May 1844
[Heber C. Kimball] Leaves to electioneer for Joseph Smith's candidacy for president of the United States. (5)
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 - Joseph Smith Papers, Timeline of Events, http://josephsmithpapers.org/TimelineOfEvents.htm
4 - Proctor, Scott and Maurine Jensen, editors, History of Joseph Smith by His Mother: Revised and Enhanced
5 - Kimball, Stanley B. (editor), On the Potter's Wheel: The Diaries of Heber C. Kimball, Chronology, Signature Books in association with Smith Research Associates, Salt Lake City, 1987
Mormon History Timeline /Chronology
http://lds-church-history.blogspot.com/