Ffeil NLW MS 11992A. - Llyfr englynion William Siôn,

A volume of 'englynion' entitled 'llyfr wiliam Siôn o fryn saeth', and partly in the hand of David Jones ('Dewi Fardd'). Many of the 'englynion' are unattributed, and the few poets represented in the volume are William Cynwal, Lewis Glyn Cothi, Ellis ap Llew[elyn], Rhys ap Niclas, Sion Philip, Dr. Sion Siengcin, Lewis Menai, Owen Jones ('o dref machynlleth'), Sion Tudur, Thomas Eufan, Ed'd ap Raff, Wm. Sion Wyn, Da'dd Siengcin, Iolo Goch, Dafydd Jones ('o Drefriw, tan yr yw', 'Dewi Fardd', 'Dewi Sion'), Moris Powel, Hyw Morris ('ar ei glafwely'), William Philip, Owen Griffydd, Mr. Mredydd Wyn ('o lanyfudd'), and Rowlant Preis. Also bound in the volume are a list of texts of sermons, 1720-1724, preached partly by Mr. Anwill, Mr. Nanney, and Mr. Thomas; and fragments of printed almanacs, among them being that of [Thomas Jones], 1686, and that of [John Jones, 'Philomath'], 1739, both published in Shrewsbury.