Here is what I have on him.I would think he was related to William Henry Sanders line, they were neighbors and went to same church....Has there been a male DNA test done on your Sanders descendant?
I next find what appears to be some of our Sanders listed in the Mt. Olive Church Records of the now Chattahoochee County [formally Muscogee County], Georgia [county on the west central border of the state] as follows:
Chattahoochee County, Georgia Archives Church Records, Mt. Olive Church, page 2, of Church Book, 1833 to 1906.
...(March 1834), Mary Lanier (by 1.) June 21, 1834. Agreed that, our communion season, March and September be our feet washing seasons. Catherine (a sister of color); Nancy Brooks, John N. Shirey and Lewis Lanier by exp., Elizabeth Sanders...
...June 23, 1838, Elizabeth Wall (ex.), Martha J. Sanders...Ezekiel Walters...
...26 Jan 1840, Bro C. A. Parker was chosen pastor and Bro Ezekiel Walters clerk...
,,,(Apr. 1844), Judy Williams (ex.), Gemima McCoy (1), F. Spurgers, Mary Lawson, Marques D. L. Sanders... [son of Peterson Sanders]
In 1850, another Sanders family household, #192, was living very close [also from the above mentioned church records]:
SANDERS Marquis D. L., 23, b. Muscogee Co., GA
SANDERS Frances A., 18, b. Muscogee Co., GA
SANDERS Erasmus P., 3, b. Muscogee Co., GA
SANDERS James L., 8 mo., b. Muscogee Co., A
 Found this family, with more children, in 1880 living in Beat 16, Walker County, Alabama [MacUs D. L. Sanders].James L. has his own famly there.No positive connection to our line found [only suspected], to date.
 Marquis D. L. Sanders [married two Riddlespurgers sisters] is said to be the son of Peterson Sanders, who was living in the county with a census note that stated Peterson Sanders was from Dinwiddie County, Virginia.Relationship Source:"The Riddlespurgers : a colonial family of the South"Author: Swatner, Coleen Moore, Gateway Press, Inc. 1988, p. 82.