I have your Eliza Mae Acord married to a Lewis Bailey. She had a half brother by the name of Wilbert H. Acord (Bill). Bill's mother was a Matilda Annie Settle McKinney.
I have not placed Bill in the 1910 - 1920 time frame. But when 1930 rolled around he was living in the Slab Fork District with his wife Mary Frances Cook. Bill died in 1978.
I have William Tally maried to a Martha Ella Allen and then a Rosia Alice Tabor. The 2/3 children that look out of place are a Henesford Acord (1913) and Jamie P. Acord (1916) and possibly William C. Acord(1920). Martha was shown living with William in the 1920 census and Rosia in the 1930 census.
I have William Tally Acord's father as being a Ben Henderson Acord.