Joseph F. Smith (legal name Joseph Fielding Smith, Sr.) is the father of Joseph Fielding Smith. He is also the nephew of Joseph Smith, Jun. (also known as Joseph Smith, Jr. and as Joseph Smith (without any Jun. or Jr.)) who is the son of Joseph Smith, Sen. (also known as Joseph Smith, Sr.). There is also Joseph Smith, III who is the son of Joseph Smith, Jun. and the cousin of Joseph F. Smith. All of these authors are associated with either the Church of Jesus Christ of Latter-day Saints (LDS Church) or the Reorganized Church of Latter-day Saints (RLDS Church, now also known as the Community of Christ). Both these churches are popularly referred to as Mormons.