Kirkland's (Faribault's) Brigade and A. P. Hill's Headquarters, June 22-23, 1864

Girardey, one of Mahone's staff officers, conveyed Mahone's plan to attack II Corps to A. P. Hill at the Davis house around 1 p.m. on June 22, 1864, then proceeded to convey the same to Cadmus Wilcox farther southeast.  William Mahone, Reply to a Communication Published by Gen. S. M. Wilcox in the "New Orleans Times," of January 1st, 1872, Mahone Family Papers; Gordon McCabe to William Mahone, July 17, 1872, Mahone Family Papers. 

Kirkland's brigade (minus 44NC) was at A. P. Hill's HQ at 10:30 p.m. June 22.  OR 51, 2:1025-1026.

Putting these two facts together suggests to me that A. P. Hill's HQ that day was at the Davis house and that was the location of Kirkland's brigade that day and probably the next.  OR 40, 2:376.  The brigade otherwise did not participate in Mahone's mauling of VI Corps on June 23.

The Confederates placed artillery at the Davis house June 21 and August 21, suggesting the site was elevated.  My USGS map is not handy, only a download, but it looks like high ground to me such as would make it suitable for an HQ as well.