A holograph manuscript of Peter Bailey Williams containing annotated transcripts of 'awdlau', 'cywyddau' and 'englynion' by Goronwy Owen; letters of Goronwy Owen, Lewis Morris ('Llewelyn Ddu o Fôn'), and William Morris (printed in J. H. Davies (ed.): The Letters of Goronwy Owen (1723-1769) (Cardiff 1924), The Letters of Lewis, Richard, William and John Morris ... 1728-1765, vols I-II (Aberystwyth, 1907-09), etc.); lists of 'Modern Welsh Authors, [fl. 1590-1770] and '... Bards who flourished about 1280'; 'englynion' by Rhisiart Jones ('o Fôn) and an 'awdl' by 'Guttun Gwrecsam' ('sef John Edward, neu Sion Ceiriog'); and a list of 'Authors of Welsh Grammars'. There are some annotations by St George Armstrong Williams.