A collection of materials for the making of a Welsh Dictionary, including vocabularies; glosses; poetry; quotations from poetry, the Welsh Laws and the Romances; proverbs; and a list of words borrowed from Latin.
An early 15th century manuscript comprising Lucidar; Kyssegr Lan Fuchedd; the Penityas; and Cyffes y Pechadur, written in a hand which is similar to that of the Mabinogion in the Red Book of Hergest.
A mid-15th century manuscript comprising the Office of the Blessed Virgin; prayers; Y Groglith; Ystoria y Grog o Hynt Elen i Gaersalem; and a Calendar. Pp. 5-10, 61-2 are in the hand of W. W. E. Wynne, Esq. of Peniarth.
A mid-16th century manuscript comprising pedigrees and notes concerning pedigrees; notes on grammar; lists of words; and poetry. The notes relating to pedigrees may be in the hand of Gruffudd Hiraethog.
Poetry of various poets of the 14th, 15th and 16th centuries copied mostly by the Reverend David Ellis. At the beginning of the manuscript there are seven poems of Rice Jones.
A modern transcript by Richard Thomas of Gossymdaith Llefoed Wynebclawr, Englynion yr Eryr, Englynion y Clyweid, Eiry mynydd, Cyvoessi Myrddin and others; and Englynion y Beddau from the book of Sir T. Williams, which was compared with a book by W. Salesbury of Llanrwst, 1776. The first 54 pages contain the text, followed by 26 blank pages; after which there is a sketch of Isallt, near Penmorfa, which was the home of Dr Gruffudd Roberts in 1782.
A collection of charms and spells; medical recipes; material relating to Meddygon Myddfai; and the Dream of the Man of Arwystli. There is also a letter, 23rd November 1863, from Robert Williams including a transcript of three leaves.
Two documents relating to Corwen church: the first is an extract from the Red Book of St Asaph concerning the taxation of the church in 1291 and 1542, and certified by the bishop in 1597, the certificate having been issued at the request of Humphrey Ednevet, vicar of Corwen; the second document is dated 1542.
A collection of religious texts in the hand of John Jones, Gellilyfdy, including accounts of the Crucifixion and Trial; the Finding of the Cross; Yr Olew Bendigaid; Purdan Padrig; and Ymryson yr Enaid a'r Corff.
A collection of Welsh words and phrases glossed in Latin and Latin words glossed in Welsh; the Pumed Lyfyr Geiryd; lists of verbs; names of furniture items; and other texts. The first 143 pages were copied by John Jones, Gellilyfdy from Roger Morris in 1606.
Transcripts in the hand of Robert Vaughan of charters, inquisitions and other records relating to Wales, including agreements between the Princes of Wales, between the Princes of Wales and Henry III, and between the Princes of Wales and Edward I.
The manuscript is in two sections: The first section is dated c. 1720 and comprises poetry relating to Garth Maelan; medical recipes; and English verses. The second section is dated c. 1753, is titled 'The Book of Gruffudd Roberts of Llan Fihangel, Carnarvonshire', and comprises 'Cywydd y Cacwn'; carols; and poetry.
