Part of Crosswood (Mont.) Manuscripts
Transcripts by Walter Davies of awdlau, etc., by Gruffudd ap Ieuan ap Llywelyn Fychan, Sion Cent, William Llyn, Syr Owain ap Gwilym, Thomas Prys, Richard Phylip, Edmwnd Prys, and Sion Tudur; etc.
Part of Celynog manuscripts
'Cywyddau', 'englynion' and 'cerddi' by Rhys Cain, Edwart Urien, Dafydd Manuel, Sion Tudur, Richard Davies, Lewis Glyn Cothi, Sion ap Hywel ap Llywelyn Fychan, Sion Mowddwy, Richard Phylip, Mathew Brwmffild, Rhys Goch Eryri, Thomas Brywnllys, William Pugh, Kleient, Rhys ab Ednyfed, Robert Dyfi, Deio ab Ieuan Du, Dafydd Nanmor, Robin Clidro, Thomas Prys, Wiliam ap Sion ap Dafydd, Ieuan Dew Brydydd, Mastr Harri, Gwerful Mechain, Griffith Owen, Rowland Vaughan, John Owen, John Thomas, Richard Owen, and Guto'r Glyn.