The catalogued material comprises two groups of deeds and other documents relating to lands of the Bodwenni and Syrior estates in Merionethshire, Denbighshire and Montgomeryshire, and to the Roberts, Williams and Evans families of Bodwenni and Syrior, [13th century]-1833; miscellaneous literary manuscripts, [16th century]-[19th cenury]; and printed material. Uncatalogued material includes deeds, family papers and correspondence, 1609-1953.

A notebook in the hand of J. H. Davies containing an incomplete essay on the significance of the Morris brothers of Anglesey as interpreters of the literary revival in Wales in the eighteenth century.

The file includes poems in memory of Grace Williams of Tuynyllan by Ellis Roberts [?'Elis y Cowper'], [pre-1789], and in praise of Madam [Mary] Wynne of Plasnewydd and Denbigh by T.E. [?Thomas Edwards, 'Twm o'r Nant'] [pre-1810] and Robert Davies [?'Bardd Nantglyn], [pre-1814], and an address by George Griffith to his tenants after the death of his father, [1834].