Cadfan, was the 6th century founder-abbot of Tywyn and Bardsey, both in Gwynedd, Wales. He was said to have received the island of Bardsey from Einion Frenin, king of Llŷn, around 516 and to have served as its abbot until 542.

November 1

• St Cadfan's Church
• Tywyn

Canonized

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