Cyrus Franklin Mangum was born 29 September 1840 in Itawamba County, Mississippi, United States to William Mangum (1811-1888) and Sarah Ada Adair (1815-1852) and died 29 September 1896 Corinne, Box Elder County, Utah of unspecified causes. He married Sarah Ellen Allen (1844-1934) 8 November 1861 in Santa Clara, Washington County, Utah. He married Mary Tranter (1855-1928) 16 December 1872 in Salt Lake City, Salt Lake County, Utah.
Numbered amoung the participants in the William Lane 1852 Pioneer Company, a early Mormon pioneer wagon train traveling from to Salt Lake City in the early summer. Consisting of approximately fifteen families who had lived since spring 1851 at a welfare "poor farm" forty miles north of Kanesville, Iowa, called Lanesborough, were organized into this company under the leadership of their bishop, William West Lane (1797-1852). While the plains of Nebraska this party was hit hard by a cholera epidemic killing Bishop Lane, his wife and several other members of the company.
|Offspring of Cyrus Franklin Mangum and Mary Tranter (1855-1928)|
|Lucretia Mangum (1874-1930)|
|Earl Mangum (1877-1945)|
|Thomas Mangum (1880-1900)|
|Melvin Daniel Mangum (1883-1906)|
|Warren Cyrus Mangum (1886-)|
|Lawrence Tranter Mangum (1888-1935)|
|Raymone Mangum (1891-1954)|