These originally stood as milestones on Roman roads – or in one case on top of a Bronze Age barrow– and were recycled in memory of local chieftains.
Safai’r rhain yn wreiddiol fel cerrig milltir ar ffyrdd Rhufeinig – neu yn achos un ohonynt ar ben beddrod o'r Oes Efydd – a chawsant eu hailgylchu er cof am benaethiaid lleol.