I believe Confederates frequently camped around Robert Cochran's (south across the creek from Frisco/Old Stonewall -- the original site of Stonewall), before and after Feb. 1864. The 29th Texas Cavalry camped near their on their way north from Ft Arbuckle. After the February '64 expedition, it was recommended that the Chickasaw be stationed there to protect against another surprise raid by Phillips. During the Civil War, more men died of disease in camp than on the battlefield so a death or graves in an area may indicate a camp was there as opposed to an engagement.
There may have been an encounter between renegade bands of Indians and Confederate Indians in the vicinity. There were many rumors of hostile Indians (that is, hostile to the Confederates) but usually no documentation to confirm the rumor. Family lore and local lore contains stories of camps and fights and "Union" Indians but, unfortunately, there is no documentation to support these stories. Often these handed-down stories can't be precisely relied on but they are worth pursuing -- they generally began based on facts that may have got confused in retelling.
So, again, I'd be interested in any stories you know about the area. Piecing such stories together with what little documentation there is may lead to a better understanding of the area.