Documents collected by Col. Sir John Conway Lloyd, including over a thousand deeds, 1323-1870, relating to properties in the counties of Brecon, Glamorgan, Hereford, Monmouth, Radnor, Cardigan, Carmarthen, Gloucester, and London; together with various documents, including letters and papers relating to the Lloyd family and other estates. In addition, the archive consists of deeds and documents, 1588-1864, mainly of industrial interest accumulated by John Lloyd (1833-1915), pertaining to the New Weare ironworks, Goodrich, Hereford; the Hirwaun ironworks; the Beaufort Iron Company, the Clydach ironworks; the Dowlais Iron Company; and the Bute Works. A substantial group of Dinas Estate records has been transferred to the Maybery Collection.

Rhestr o'r rhoddion a'r taliadau, 22 Rhagfyr 1837, a dderbyniodd John Williams a Margaret James [tad-cu a mam-gu D. J. Williams] ar gyfer diwrnod ei neithior; marwnad, [1886], i'w dad-cu Jaci [John Williams], Penrhiw, Llansawel, gan 'Hen Gyfaill'; ynghyd â llungopïau, 1967, o gyfrifiad 1851 yn cynnwys cofnod ar gyfer teulu John a Margaret Williams, Penrhiw, a ddarparwyd gan D. Oswald Davies, a nodiadau teipysgrif, 1967, o gyfrifiad 1841-1861 a ffynonellau achyddol eraill.

The sub-fonds comprises deeds and legal papers, 1620-1928, relating to the Clettwr estate, Cardiganshire, the Cilgell Isaf estate, Carmarthenshire, and to premises in the parish of Aberdare, Glamorganshire.

Deeds relating mainly to Carmarthenshire, 1531-1857, and to other Welsh counties including Brecknockshire, 1655-1800, Cardiganshire, 1628-1819, Glamorgan, 1673-1792, Monmouthshire, 1636-1795, Montgomeryshire, 1675-1702, Pembrokeshire, 1724-1811, and Radnorshire, 1689-1773. There is no apparent connection between the deeds.

Nodiadau darlithiau ar gyfer dosbarthiadau yn Sir Gaerfyrddin yn bennaf, [1938], [1959]- [1976], gan gynnwys llyfr nodiadau 'Enwau afonydd a nentydd Sir Gaerfyrddin', 1969.

A manuscript in several hands containing a list of proper names, with commentaries, from Court Rolls, etc., and also a list of the parishes of Carmarthenshire.

Title deeds, 1525-1907, of the Derwydd estate, mainly in Carmarthenshire, and of the families of Vaughan of Golden Grove and Llanelli, Bevan of Laugharne (including Madam Bridget Bevan, 1698-1779), Stepney of Llanelli, and Stepney-Gulston of Derwydd. There are no personal or family papers in the archive.