Morwenna is the eponymous patron saint of Morwenstow, a civil parish and village in north Cornwall, UK. Her name is thought to be cognate with Welsh morwyn "maiden", although the first name is also used in Wales and Brittany and said to be composed of "Mor" and "Gwenn", meaning "White sea" in both Welsh and Breton.

July 8

• Morwenstow
• Cornwall
• England

Canonized

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