April 3, 1814 – Lorenzo Snow was born in Mantua, Portage Co., O.
April 5, 1829 – Joseph Smith, jun., and Oliver Cowdery met for the first time.
April 6, 1830 – The Church (afterwards named by revelation the Church of Jesus Christ of Latter-Saints) was organized according to the laws of the State of New York, in the house of Peter Whitmer, sen., at Fayette, Seneca Co., N. Y., with six members, namely, Joseph Smith, jun., Oliver Cowdery, Hyrum Smith, Peter Whitmer, jun., Samuel H. Smith and David Whitmer. Joseph Smith, jun., and Oliver Cowdery ordained each other Elders—the first Elders in the Church—according to commandment from God. They then laid hands on all the baptized members present, “that they might receive the gift of the Holy Ghost and be confirmed members of the Church.” The Holy Ghost was poured out upon them “to a very great degree.” Some prophesied and “all praised the Lord and rejoiced exceedingly.”
April 6, 1833 – About eighty official and some unofficial members of the Church met at the ferry on Big Blue river, near the western boundary of Jackson County, Missouri, and, for the first time, celebrated the birthday of the Church.
April 6, 1841 – A general conference of the Church was commenced at Nauvoo, and the corner stones of the Nauvoo Temple were laid. The conference was continued till the 11th.
Taken from Andrew Jenson’s: Church Chronology