Biography
Eliza Clark Mangum was born 11 August 1827 in Greene County, Alabama to Daniel Clark (1800-1832) and Fairby Adair (1809-1836) and died 21 February 1859 Washington, Washington County, Utah Territory of unspecified causes. She married James Mitchell Mangum (1820-1888) 23 June 1842 in Itawamba County, Mississippi.
Charles C. Rich 1847 Pioneer Company
Charles Coulson Rich (1809-1883) led a pioneer company of 126 individuals that consisted primarily of members of The Church of Jesus Christ of Latter-day Saints who were seeking refuge from religion persecution. Brother Rich was one of of the Apostles of the church. They left the Elkhorn River in Nebraska on 21 June 1847 and reached the Salt Lake Valley on 02 Oct 1847. The Mangums and Adairs were part of this company.
Children
| Name | Birth | Death | Joined with |
| Joseph Daniel Mangum (1844-1846) | 1844 Itawamba County, Mississippi, United States | 1846 Mt. Pisgah, Union County, Iowa | |
| James Harvey Mangum (1848-1919) | |||
| John William Mangum (1850-1927) | 14 November 1850 Provo, Utah County, Utah, United States | 19 March 1927 Colonia Juarez, Chihuahua, Mexico | Eliza Olive Hamblin (1857-1943) |
| Heber Clark Mangum (1852-1908) | 7 October 1852 Payson, Utah County, Utah, United States | 1 May 1908 Provo, Utah County, Utah, United States | Mary Louisa Leavitt (1853-1943) |
| Martha Jane Mangum (1855-1916) | |||
| Lydia Ann Mangum (1857-1919) | |||
Siblings
| Name | Birth | Death | Joined with |
| Eliza Jane Clark (1827-1859) | 11 August 1827 Greene County, Alabama | 21 February 1859 Washington, Washington County, Utah Territory | James Mitchell Mangum (1820-1888) |
| Samuel Harvey Clark (1829-1868) | 11 August 1829 Greene County, Alabama | 11 March 1868 Payson, Utah County, Utah Territory | Lois Patten Haws (1841-1915) |