Oes y Sant, the Age of the Saints, was the period between roughly AD 450 and 600 when an extraordinary generation of Christian figures shaped the sacred landscape of Wales for the fifteen centuries that followed. This publication presents a free, publicly accessible interactive map of that landscape alongside a full companion article tracing the period, the people and the places they left behind.

The map contains thirty verified locations across five layers covering the saints themselves, the monastic communities they founded, the holy wells that outlasted those communities, the great pilgrimage destinations of medieval Wales, and the parish churches that carry a saint's name to this day. Every pin opens a detailed description. The companion article gives the full narrative context, from the world the saints inherited after Rome's departure to the legacy they left in the place-names, churchyards and pilgrimage routes of modern Wales.

Researched, written, mapped and published by Graham Tudor Emmanuel, Kidwelly, Carmarthenshire. Part of a wider Welsh Religious Heritage digital mapping programme. All content is freely available.

AI tools were used in the research synthesis and document production process.