Per the Pendleton County Grave Register, Vol. 1, pg. 30 there is a "Martin" Cemetery on the Deer Run - Kline road (which can be viewed on google maps by entering Deer Run, WV and then clicking "Directions" and entering Kline, WV. Buried in the cemetery are John McMullen and his wife and also some of John Mallow's family. This cemetery, if not on the old George Lough grants, is very close (part of the inclusive McMullen survey).
Perhaps someone who lives in the area or someone who has done more research on the McMullens, George Lough, or even the John Mallow family can tell you if the Lough homestead was near the cemetery.
At the least, the Deer Run - Kline Rd. passes through or very near (on the west) of George Lough's land.