MS State Archives show M.W. Ward enlisted Sep 11, 1861 Covington County, KIA 20 Sep 1863 Chickamagua TN. List no next of kin, grave site unknown.
John W. Dyess, "Mack" Ward's brother in law, per State Archives list John as enlisting Sep 27, 1861 at Shieldsboro (present day Bay St Louis) MS.
Maybe some one will be able to locate additional information.
Bill Ward