1840s
- 14 April 1840
- Willard Richards ordained in England. Also the first occasion where Brigham Young was formally sustained President of the Quorum of the Twelve Apostles
- 8 April 1841
- Lyman Wight ordained.
- 20 August 1842
- Orson Pratt excommunicated. Amasa M. Lyman ordained.
- 20 January 1843
- Orson Pratt rebaptized and restored to former office in the Quorum. Amasa M. Lyman replaced.
- 4 February 1843
- Amasa M. Lyman made a Counselor to First Presidency.
- 27 June 1844
- Joseph Smith, Jr. and Hyrum Smith martyred. Amasa M. Lyman retires from First Presidency.
- 12 August 1844
- Amasa M. Lyman returned to the Quorum.
- 6 October 1845
- William Smith dropped from Quorum. He was excommunicated 19 October 1845.
- 11 January 1846
- Orson Hyde disfellowshipped for second time but reinstated a few days later.
- 9 February 1846
- John E. Page disfellowshipped. He was excommunicated on 27 June 1846
- 16 July 1846
- Ezra T. Benson ordained.
- 27 December 1847
- The First Presidency is reorganized, with Brigham Young President, Heber C. Kimball First Counselor, and Willard Richards Second Counselor. Orson Hyde becomes President of the Quorum.
- 3 December 1848
- Lyman Wight excommunicated.
- 12 February 1849
- Charles C. Rich, Lorenzo Snow, Erastus Snow, and Franklin D. Richards ordained.
Read more about this topic: Chronology Of The Quorum Of The Twelve Apostles (LDS Church)