one of the four admitted to the degree of ‘pencerdd cerdd dant’ at the eisteddfod held at Caerwys 26 May 1568.
Published date: 1959
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Griffith, R. D., (1959). EDNYFED, SION, musician. Dictionary of Welsh Biography. Retrieved 21 Feb 2019, from https://biography.wales/article/s-EDNY-SIO-1568