I am working on both Ray and Allen lines, but I haven't proven them back quite that far, although I strongly suspect they were in Wake and Granville during that timeline. Are you open to working together?
Interestingly, I live within a few miles of Ray Road in northern Wake County running into southern Granville County. I do not know the connection with the Ray family of the area, though there must be one. It would be interesting to compare the land maps to the road at some point.