Manuscripts and papers relating to the Lloyd family of Bronwydd, Cardiganshire, and their ancestors, the Owen family of Henllys, Pembrokeshire, and records relating to the Bronwydd estate, including an early 17th century book of South Wales pedigrees, the literary, genealogical and historical manuscripts of George Owen of Henllys (c.1552-1613), including his Vairdre Book and a copy of his Description of Pembrokeshire; estate records including manorial records of Pembrokeshire manors including the barony of Cemais, including court rolls, 1381-1771, estreat rolls, 1474-1748, and court leet presentments, 1660-1885; records relating to the borough of Newport, Pembrokeshire, 1434-1847; toll books of Eglwyswrw and Newport fairs, 1599-1603; title deeds, 1241-1933, but mostly 16-18 cent.; rentals, 1682-1873; and estate correspondence, mainly [late 19]-[early 20 cent.].

A volume (No. V) in the autograph of the Rev. Henry James Vincent (1799-1865), vicar of St Dogmaels, Pembrokeshire. The greater part of the manuscript relates to the life and work of Griffith Jones, Llanddowror, and contains extracts from his diary and his letters to Madam Bevan. The remainder of the manuscript contains notes on Theophilus Evans, David Williams, founder of the Literary Fund, and Maurice Morgan and also a description, with particular reference to matters of historical and archaeological interest, of the Llanfyrnach, Clydey and Cilrhedyn area of Pembrokeshire.

A copy of Margaret F. Harris's (née Davies) PhD thesis, 'Little England beyond Wales as a regional unit' (Birbeck College, 1949).

Manuscript notes and galley proofs relating to the 'Additional Notes on the Counties of Pembroke and Carmarthen' by Egerton Philimore in the Description of Pembrokeshire, volume 4, together with a photograph of the Gwaun valley .