Pedigrees of North Wales families copied by Jonathan Jones, Caernarfon and others from collections made by Owen Gruffydd, Llanystumdwy, together with cywyddau and englynion by Owen Gruffydd, Robert ap Rhys Wyn, Thomas Prys and Wiliam Llyn.

Pedigrees, mainly of North Wales families; a list of uncommon Welsh words taken from John Davies, Mallwyd: Dictionarium ... (London, 1632); a vocabulary of some 'hard' Latin words; 'cywyddau' and other poems by Rowland Williams, Rhys Meigen, Dafydd ap Gwilym, Rowland Vaughan, Siôn Cent, Dafydd ab Edmwnd, Wiliam Phylip, Owen Gruffydd, Edmwnd Prys, Robin Ddu, Siôn Phylip, Sion Tudur, Gruffudd Phylip, Maredudd ap Rhys, Gutun Owain, Iolo Goch, Morus Berwyn, Ffowc Prys, Owain Gwynedd, Roger [C]yffin, Siôn Brwynog, Syr Owain ap Gwilym, Wiliam Llŷn, Huw Arwystli, Richard Phylip, Dafydd Nanmor, [If]an Llwyd ('o wain Eingian'), Hywel Cilan, Edwart Urien, Lewis Glyn Cothi, Rhys Cain, Lewis Trefnant, Matthew Brwmffild, James Dwnn, Ieuan Dew Brydydd, Heilyn Fardd, Huw Machno, Guto'r Glyn, etc. ; a description of Britain based on the early chronicles; the triads of Dyfnwal Moelmud; etc.