Christianity had entered Wales during Roman times, initially as an urban religion.
[1] It is considered to have started with Saint Dubricius (also known as Dyfrig), who had been bishop at the Roman British settlement of Ariconium (in present-day Herefordshire) in the mid-fifth century, and who founded a monastery at nearby Hentland.
[3] Bardsey Island has been an important religious site since the 6th century, when Saint Cadfan founded a monastery there.
[6] Their identity would emerge separately from the base established in England by Saint Augustine in 597 AD.
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