In continuing my search for J.B. McCord, I found the following information on cemetries in Columbus, MS.
There were apparently 4 City cemeteries at one time. Two surviving, Friendship & Sandfield. Two lost, one underneath the parking lot at the First Episcopal Church, the oldest known city cemetery. It was in use until around 1850. Another in squares 32 & 73 north of Main Street, today occupied in part by the new police department building. This cemetery was in use from at least 1840 until the late 1860s, perhaps later.
http://www.rootsweb.com/~mslownde/Possumtown/Column_25.htm
McCord is not listed among those known to be buried at Friendship or Sandfield.
Friendship
http://www.rootsweb.com/~mslownde/Friendship/Friendship_CSA.html
Sandfield
http://www.rootsweb.com/~mslownde/cemeteries/Sandfield_Cemetery.html
Barry