My great-grandmother Dora Rebecca Addington was born 14 May 1886 in Barry Co., Mo. Her father William Henry Addington was born in Benton Co.,Arkansas (directly across the state line from Barry Co.) in 1860. His parents were James M. Addington (b. April 1827 in NC [or SC]; d. 26 Dec 1908, Adams co., Utah) and his wife Matilda Ann Bradley (b. 1829; d. 12 Jan 1899 Adams Co., Utah).
James' family is in the 1860 fed'l census in Benton Co.,AR. they are in Boone co., AR for 1870.
James'parents were James Addington and Winifred Woodfin.
I'll try to get back with more information to help you.