Source - Early Records of Simpson Families, compiler Helen A. Simpson, J.B. Lippincott Co, Philadelphia, 1927, p 361:
There is a "Quaker Graveyard," so known to the inhabitants, between Llanidloes and Llangurrig, nearer to the latter village, a short distance on a road leading off to the right as one drives to Llanidloes. It is on a steep hill. It is there, probably, that Thomas Potts of Llanidloes was buried.