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

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.

Notebook, [1905x1930], of M. H. Jones, Penllwyn, Aberystwyth, containing lists of place-names in Carmarthenshire, arranged by letter and accompanied by etymological and philological notes, as well as detailed notes relating to older forms of names.
Notes found loose inside the volume have been placed in an archival envelope (ff. 144-145).

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.

Records and court rolls, 1832-1936, mainly relating to the manors of Anhuniog, Creuddyn, Cyfoethbrenin, Mebwynion, Mefenydd, Perfedd, Tal-y-sarn and Silian, in Cardiganshire, 1874-1936, and the manors of Caeo, Catheiniog, Glyncothi and Bwlchcymbyd, Mabelfyw, Mabedrud, Maenordeilo, Mallaen, Pennant Forest and Talley, in Carmarthenshire, 1883-1934; copies of surveys of Talley, 1832; and miscellaneous documents, 1842-1858.

A vesting assent dated 17 December 1953, bound in book form, relating to the Llysnewydd Estate in the counties of Carmarthen and Cardigan, 1953-1981, including an estate map.

Records relating to the Whitland and Gilfach quarries, comprising records of usage, [1890-1899]; slate prices, [1895]; account books, 1896-1918; report, 1897; agreements, 1898 and 1902; and lease 1898.

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, 1557-1808, relating to premises mainly in Carmarthenshire, with some in Montgomeryshire, Cardiganshire and Flintshire, and a small number in other Welsh counties.

Deeds and documents, 1631-1861, relating to the Llanllyr estate in Cardiganshire, Carmarthen, and Llangynog and Merthyr in Carmarthenshire, together with a toll book, 1796-1833, of Talsarn fairs.

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.

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.

Monmouthshire deeds and documents, 1477-1761, some concerning the families of Thomas, Kemeys and Gardner (later Gardner-Kemeys) of Bertholey, Llantrissent; together with a small number of deeds and documents relating to properties in Denbighshire, Flintshire and Brecknockshire, 1513-1775; Cardiganshire, 1578-1755; Yorkshire, 1398-1605, and Lincolnshire, 1563.

Notes by G. G. T. Treherne on the place-names Barrietts, Pwll randun, Kingaddle, Plashet, and Crick.

Deeds and documents relating to Cardiganshire, 1590-1751; and Montgomeryshire, 1517-1770; deeds and documents relating to the Hughes family of Gogarth, 1669-1910; and miscellaneous items, 1692-1825.

Deeds, mainly relating to Cardiganshire and Carmarthenshire, 1668-1757.

Deeds and papers collected by Douglas J. Elliott, mainly relating to the Jones of Glanyrafon-ddu family and to properties in Llansadwrn, Pencarreg, and Talley, Carmarthenshire, 1767-1869; and typescript copy of the parish register of Gwaenysgor, Flintshire, 1713-1760, [20th century].

Ledger, 1812-1828 (watermark 1810), of Thomas Rees of New Inn, Llanfihangel-ar-arth, Carmarthenshire, a general merchant operating in Carmarthenshire and Cardiganshire, written mainly in the hand of his clerk, John Griffiths.
The ledger relates primarily to his Carmarthenshire customers and includes records of payments for butter and for the transportation of goods (particularly butter) between New Inn and Tregaron, Lampeter and Carmarthen. There are entries of old debts dating from 1798 (pp. 1-2) and particulars of rents and Talley grange custom paid by tenants and debts collected on behalf of creditors. Items found loose in the volume, including invoices and a note relating to the export of butter, have been placed in an archival envelope (42 ff.).

Deeds and other documents mainly relating to families and estates in the St Davids area, Pembrokeshire, 1694-1896, including manuscript maps relating to the parishes of Llanrheithan and Mathri, Pembrokeshire, and Llanwinio, Carmarthenshire, 1812-1821. The families involved include Howells of Llysyfran, Ford of Stonehall, Owen of Orielton, James of Llandeloy and St Edrins, Parry of Porthiddy (Llanrian), Laugharne of Orlandon, and Mathias of Lochmeyler and Castle Cenlas. The Mathias family include Rev. John Matthias (d. 1805) of Lochmeyler, vicar of Llandeloy, who bought Castle Cenlas, c.1792.