"...uncovered the graves of nine skeletons dated to the early 1300s. Five, including Skeleton 150, dated to the 1300s."
That seems like a contradiction.
That seems like a contradiction.
As in, the grave itself was dated, and 5 of the 9 skeletons found inside were also individually dated to roughly the same century. Maybe the other 4 were not tested, or turned out to have been buried at a later date.