Dictionary of Welsh Biography

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SIANCYN FYNGLWYD ( fl. c. 1470 ), poet ;

a native, presumably, of South Wales . Nothing is known of his life, but a few of his poems remain in manuscript. These include two cywyddau to Sir Rhys ap Thomas of Dynevor when he was a young man ( Pen. MS. 83 (70) , Llanst. MS. 30 (435) ). His son, Dafydd Fynglwyd (q.v.) , was also a poet .


  • Additional Manuscript in the British Museum 48;
  • Brogyntyn MS. at the National Library of Wales, Aberystwyth 2 (N.L.W.);
  • Cardiff Manuscript 27;
  • Jes. Coll. MS. at the Bodleian Library, Oxford 17;
  • Llanstephan Manuscript at the National Library of Wales, Aberystwyth 30;
  • Peniarth Manuscript in the National Library of Wales 83.


Ray Looker, (Mrs Ray Morgan), Cardiff / Rhymni

Published date: 1959