"The Choctaw built court grounds and a courthouse north of present Atoka on the Muddy Boggy.

From http://digital.library.okstate.edu/encyclopedia/entries/A/AT005.html

The 1862 measles encampment was at Harkin Springs (a few hundred yards north of the current confederate cemetery) and there are a number of Harkins buried in a family cemetery which are separate but next to the Confederate Cemetery as I understand it.

John R