Virginia's Powhatan Light Artillery

Organized in July 1861
The unit served in the Army of Northern Virginia assigned to J. I Brown's and R. A. Hardaway's Battalion of Artillery.
It was on duty in the Richmond area, then fought in various conflicts from the Maryland Campaign to Cold Harbor.
Later it participated in the Petersburg siege south of the James River and the Appomattox Campaign.
The battery lost twenty percent of the 78 engaged at Gettysburg and had many captured at Sayler's Creek on April 6, 1865.
Only 1 man surrendered with the army.
Captain Willis J. Dance was in command.
AKA - Dance's Company, Virginia Artillery

The Civil War Soldiers and Sailors database lists 243 men on its roster for Dance's Company, Virginia Artillery.
Roster at Ranger95 (archived page)