SION DAFYDD ap SIENCYN (SION ap DAFYDD ap SIENCYN, or SION DAFYDD SIENCYN) .
A poet of this name flourished in the time of Edmund Prys (1544-1623). Poems attributed to him are found in Esgair MS. 26; Brogyntyn MS. 2; Cwrtmawr MSS. 11, 27, 70, 129; N.L.W. MS. 2692; Mostyn MS. 144; Pen. MS. 239; Llanst. MS. 156; Cardiff MSS. 19, 48, 64, 66; Jes. Coll. MS. 17; and B.M. Add. MS. 12230.
Author:
Griffith Milwyn Griffiths, M.A., Aberystwyth
