He was admitted to the grade of ‘pencerdd cerdd dant crwth’ at the Caerwys eisteddfod held 2 July 1523.
Published date: 1959
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Griffith, R. D., (1959). EDWARD GRYTHOR, i.e. Edward the ‘crowder.’. Dictionary of Welsh Biography. Retrieved 21 Feb 2019, from https://biography.wales/article/s-EDWA-GRY-1523