The baptismal site has been identified as Bennett's Pond. Thanks to Jessie Senter Jamerson for confirmation. She believes the pond was located on Roddie Bennett's land and was likely destroyed during construction of the Tenn-Tom Waterway. See here for the original post regarding this baptism scene: http://itawambaconnections.blogspot.com/2008/11/baptism-at-mud-creek-or-is-it-bennetts.html
Sure enough, there is a household listed for Roddie H. Bennett in the 1930 Itawamba County census in Beat 1 along the Baldwyn-Russellville Road. Roddie was born in 1886 to Francis M. Bennett and Nancy Margaret Houston.
Jessie is the daughter of Jessie Alvin Senter and Nervie Mae Dulaney. She married Harlon Wilburn Jamerson who died in 1982. Most important to me, however, is that Jessie is the grandmother of Jada Jamerson Mills, my daughter-in-law.