No relation. You need to obtain the pension application filed in either his name, or that of his widow, see below.

If he died survive, then his companies muster roll entry is incorrect.

Correspondence between the Adjutant General, War Department, with the Georgia State board of pension commissioners, dated September 15, 1915, indicate that Benjamin F. Martin died August 27, 1861. This fact is taken from his companies muster roll for the period July & August, 1861, no further records

M266: Compiled Service Records of Confederate Soldiers Who Served in Organizations from the State of Georgia