I've got some info, but not much farther back.
James Robert Mitchell b:02 JUN 1874 Waterford, MS
children:Susan Pauline Mitchell b:1904 AL
Robert DeCalvin Mitchell b:24 JUL 1907 Tuscaloosa, AL

William Hall Mitchell b: 27 FEB 1840 AL & Frances A Henderson b: 1847 Marshall County, MS
children: Bluford Elisha Mitchell b: 16 DEC 1869
Lucy Mitchell b: 1870
Wilmot Lee Mitchell b: 1872
James Robert Mitchell b: 02 JUN 1874 Waterford,MS
Mary Ida Mitchell b: 1879

Elisha C Mitchell b: 1817 KY & Rebecca Ann Alexander b: 1817 TN
children: Martha B Mitchell b:1839 AL
William Hall Mitchell b: 27 FEB 1840 AL
Joseph F Mitchell b: 1844 MS
Nancy R Mitchell b: 1846 MS
Thomas J Mitchell b: 1850 MS
James Mitchell b: 1852 MS
Laura B Mitchell b: 1855 MS
Mary U Mitchell b:1859 MS