Deeds, rentals, estate receiver's accounts, surveys, valuations, correspondence, maps and plans of the Ashburnham estate in Breconshire, Carmarthenshire and Glamorganshire, 1392-1968 (predominantly 1600-1925); sale catalogues and related papers, 1900-1923, deeds of the Mellington Hall estate in the parishes of Churchstoke and Mainstone in Montgomeryshire and Shropshire, 1753-1937, mortgaged by Samuel Rankin Heap to the trustees of the Ashburnham estate in 1923; manorial records and related papers of the manors of Cantref Selyf, 1650-1810, Talgarth, 1650-1826, Bronllys, 1661-1757, and Crickadarn, 1743-1809, all in Breconshire, and especially of the manor of Pembrey in Carmarthenshire, 1663-1922 (including papers relating to rights of shipwreck); accounts of collieries in Pembrey, 1714-1852 (mainly 1795 onwards), and papers relating to Pembrey tithes, colliery, port and harbour, and foreshore rights and wrecks, mainly 18-early 20 cent.

Records from the office of D. T. M Jones & Co., solicitors, 1775-[?1940], including office correspondence, 1775-1840, of Edward Jones senior, 1775-1820, Edward Jones junior, [c. 1790]-1840, Thomas Lewis, 1793-1800, John Jones, 1805-1852 (predominantly 1845-1848), Thomas Jones, 1860-1897, and D. T. M. Jones, 1898-1933; manuscript books, 1744-1925, including letter books, 1859-1917; depositions of witnesses, 1736-1768; deeds and records of lands in Cardiganshire, Carmarthenshire, Glamorgan, Pembrokeshire and Radnorshire, [16th century]-1949, including the estates of Dinas, Brecknockshire, 1756-1949, the Gwynne family of Glanbran and Buckland, 1679-1882, Cynghordy, Carmarthenshire, 1843-1945, Abermarlais, Carmarthenshire, 1712-1923, the Lloyd family of Briwnant, Carmarthenshire, 1544-1927, Glansevin, Carmarthenshire, 1678-1914, the Herbert Lloyd estate, Carmarthen, 1805-1884, Jones Family of Ystrad estate, Carmarthen and district, 1776-1865, and Llandeilo and district, 1785-1882, Glanyrannell estate, Carmarthenshire, 1692-1919, and Honeyborough, Pembrokeshire, 1783-1923; accounts, 1782-[?1940]; manorial records, [c. 1830]-1887; papers of Roger Jones, attorney, 1565-1867, including correspondence, [c. 1750]-1772, deeds and documents relating to the practice and estate, 1565-1867, and correspondence of Rev. John Jones, 1738-1790.