Dictionary of Welsh Biography

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SION BRWYNOG (d. 1567? ), poet .

Son of William ap Llywelyn ap Iorwerth . He lived at Brwynog , in the parish of Llanfflewyn , Anglesey , from which farm he took his surname. He belonged to the lesser squirearchy and, as a strolling poet , had wandered over many parts of the country, writing poems for the aristocracy of Anglesey , Caernarvonshire , Denbighshire , Flintshire , and Merioneth . There was a brief exchange of flyting poetry between him and Gruffudd Hiraethog on the subject of the merits of Anglesey and Tegeingl . He addressed poems to Henry VIII and Mary , and mentions Edward VI , but does not refer to Elizabeth at all. He was a staunch papist who had no love or use for the new religion. His name is not included in the list of bards who attended the two eisteddfodau at Caerwys — perhaps he was too young in 1523 and that by 1567 he had become too frail or was dead. He m. Jane , daughter of Owen ap Ifan ap Madog of Ucheldre , Llanfflewyn , and they had a son, William Brwynog . Siôn Brwynog was buried in Llanddeusant churchyard.


  • W. J. Gruffydd , Llenyddiaeth Cymru o 1450 hyd 1600 , 75-6;
  • U.C.N.W. Gaianydd papers, 21, ‘Cywyddau Siôn Brwynog’;
  • Pedigrees of Anglesey and Carnarvonshire Families (1914) , 79;
  • Peniarth Manuscript in the National Library of Wales 122 (123).


Dr Enid Pierce Roberts, M.A., D.Litt., Bangor

Corrections and additions:

SIÔN BRWYNOG ( DWB , 912-3).

He d. in 1562 , according to an elegy by Gr. Hiraethog — Bodleian MS. 31440, f. 4, 176-80 .


Dr Enid Pierce Roberts, M.A., D.Litt., Bangor

Published date: 1959