Edeyrnion could refer to:
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Edeirnion
Edeirnion or Edeyrnion is an area of the county of Denbighshire and an ancient commote of medieval Wales in the cantref of Penllyn. According to tradition, it was named after its eponymous founder Edern or Edeyrn. It was included as a Welsh t ...
(antiquarian form: ''Edeyrnion''), a medieval Welsh cantref and area of Gwynedd
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Edeyrnion Rural District, a former administrative district
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