The spelling as I know it is the same - Samaria Church.
It's also known as Nance's Shop.
It's located in the Malvern Hill area.

June 15, 1864 - 3rd Div, Cavalry Corps, Army of the Potomac was involved
June 24, 1864 - 1st & 2nd Div, Cavalry Corps, Army of the Potomac
CSA had 5th SC Cavalry at this one