See John Ball's site Welsh Churches and Chapels Collection for a photograph/data re Greig Zion (or Salem|) Primitive Methodist (or Baptist) Chapel, Grosmont
Church and chapel data from The Religious census of 1851 : A Calendar of the returns relating to Wales, Vol 1, South Wales. Ed. by I.G Jones, & D. Williams. UWP, Cardiff, 1976. The names given towards the end of each entry are those of the informants. Check with Gwent RO to see what extant records are held, and possible names of chapels/churches established after 1851.
- There is no entry in the above for Grosmont parish, whether by omission or otherwise is unknown