Members of the Church of Jesus Christ of Latter-day Saints are commonly referred to as Mormons because they believe in the Bible and another gospel known as the Book of Mormon. The Mormon nickname is also applied to members of the Community of Christ church, Fundamentalist and Reformed Latter-day Saints.
Members of the church refer to themselves as Latter-day Saints because they say Christians in ancient times, or former days, were referred to as Saints. As such, they differentiate themselves from "former-day Saints" by calling themselves Latter-day Saints. Although they are not offended when referred to as Mormons, members prefer the term Latter-day Saint.
The Church of Jesus Christ of Latter-day Saints was founded by Joseph Smith in New York in April 1830. Smith reported that God and Jesus Christ appeared to him during prayer. Smith stated other divine messengers visited and instructed him to restore the Church of Jesus Christ on Earth. He continued to lead the church until he was murdered in 1844.
The headquarters of the Church of Jesus Christ of Latter-day Saints is in Salt Lake City, Utah. It is the largest branch of the Latter-day Saints faith. Other churches that have broken off from the original church include the Reformed Mormons, founded in 2002, the Fundamentalist Mormons, founded in 1910, and The Reorganized Church of Jesus Christ of Latter-day Saints, formed in 1860.