Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
O.S. map of Monmouthshire
Ordnance Survey Map Edition of 1920 Monmouthshire Sheet XXVII.4 Scale 1/2500 being 25.344 inches to a statute mile or 208.33 feet to one inch
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.