Byron Harvey Allred, Jr. was born 31 March 1870 in Saint Charles, Bear Lake County, Idaho, United States to ฺByron Harvey Allred (1847-1912) and Phoebe Irene Cook (1852-1913) and died 18 January 1937 Emmett, Gem County, Idaho, United States of unspecified causes. He married Charlotte Susannah Pead (1870-1908) . He married Mary Evelyn Clark (1884-1954) 15 July 1903 in Colonia Dublán, Chihuahua, Mexico.
Children
| Name | Birth | Death | Joined with |
| Ezra Harvey Allred (1889-1904) | |||
| Lothair William Allred (1891-1972) | |||
| Elwood Bryan Allred (1894-1979) | |||
| Moses Thatcher Allred (1896-1978) | |||
| Harold Allred (1900-1980) | |||
| Charlotte Allred (1900-1967) | |||
| Othello Allred (1902-1903) | |||
| Irene Allred (1903-1980) | |||
| Rhea Allred (1906-1989) | |||
| Grace Allred (1908-1908) | |||
| Erma Allred (1908-1908) | |||
| Name | Birth | Death | Joined with |
| Lewis Clark Allred (1904-1905) | |||
| Rulon Clark Allred (1906-1977) | 29 March 1906 Colonia Dublán, Chihuahua, Mexico | 10 May 1977 Murray, Salt Lake County, Utah, United States | |
| Mary Evelyn Allred (1908-1979) | |||
| Owen Arthur Allred (1914-2005) | |||
| Beth Allred (1916-1980) | |||
| Marvin Laddie Allred (1918-2003) | |||
| Modine Allred (1921-1996) | |||
| Clarence Eugene Allred (1924-2015) | |||
Siblings
| Name | Birth | Death | Joined with |
| Byron Harvey Allred (1870-1937) | 31 March 1870 Saint Charles, Bear Lake County, Idaho, United States | 18 January 1937 Emmett, Gem County, Idaho, United States | Charlotte Susannah Pead (1870-1908) Mary Evelyn Clark (1884-1954) |
| Myra Irene Allred (1872-1912) | |||
| Name | Birth | Death | Joined with |
| Unknown Allred (1876-1876) | |||
| Orville Albert Allred (1877-1937) | |||
| Melvin Calvert Allred (1879-1896) | |||
| Alta Mathilda Allred (1881-1948) | |||
| Minnie Diantha Allred (1883-1883) | |||
| Ednar Jay Allred (1884-1938) | |||
| Cora Allred (1886-1970) | |||
| Eva Allred (1888-1918) | |||
| Orissa Allred (1890-1972) | |||
| Cyrus William Allred (1892-1893) | |||
| Orson Parley Allred (1894-1977) | |||
| Rolla Arlin Allred (1898-1971) | |||
| Name | Birth | Death | Joined with |
| Henry Garcia Allred (1895-1954) | |||
| Lavon Tracy Allred (1901-1995) | |||
| Mary Viola Allred (1904-2000) | |||
| Emaline Patricia Allred (1915-1993) | |||