Stone knwn as Maen Sartien/Maen Sertan, identified with Maen-y-Siartyr, the 'charter stone', mentioned in a charter granted to Aberconwy Abbey, 1198 (see Gresham 1939 (AC94), 145-6).
(source Os495card; SH85NW9)
Given NGR uncertain, OS record card gives SH84105546.
Possibly to be associated with a linear earthwork feature (Nprn400472) that runs at least 500m NNW-SSE past given NGR.
RCAHMW AP945111/54
J.Wiles 26.05.04