A Clue! B. F. Lowe
There is a B. Franklin Lowe listed in Ashley Co Mill Creek Tsp in 1880 age 42, born in MS. His wife is Martha and he has a brother Edwin age 30 also born in MS living with him. This household also includes some Black and mulatto folks last named Lowe as well.
In 1910 a Mattie A. Lowe is living in Hamburg, Ashley County (Mattie is nickname for Martha so pretty close event though age is off a little bit)
The B. F. Lowe fits, if his age at enlisting was around 21.