Deeds, 1609-1873, mostly relating to lands in Carmarthenshire, including the Trimsaran estate; records of the Commissioners of the Kidwelly and Llanelli Canal and Tramroad Act, 1813-1834; and deeds and records of the Llanelli Canal and Tramroad Company, 1834-1839. The fonds does not contain any records relating to the Carmarthenshire Antiquarian Society.

Records relating to the Brigstocke family, including deeds of properties in Carmarthenshire and Pembrokeshire prior their acquisition by the Brigstockes, 1496-1889; deeds and documents of members of the Brigstocke family, 1655-1912; miscellaneous deeds, documents and papers relating to the Brigstocke family and lands in Carmarthenshire, including the Dolhaidd estate, 1846-1892, Cenarth, 1741-1838, and Llandyfaelog and Kidwelly, 1772-1833; legal papers, 1751-1775; and deeds and documents collected by W. Evans George relating to other estates, including: papers of the Lewes family of Gellidywyll, mostly bills and receipts, 1741-1792; draft deeds of W. Evans George for property in the Lower Teifi Valley, Cardiganshire and Carmarthenshire, 1896-1922; sale and account books of W. Evans George and Sons, 1863-1884; printed material, 1837-1925; papers concerned with local elections in Cardiganshire, 1741-1937; weekly account book of the surveyor of the South Wales Highway for Llanfihangel-ar-arth, 1866-1873; records of the Court of Petty Sessions, Penrhiw-pal, Cardiganshire, 1903-1927; and records of the Newcastle Emlyn Town Improvement Committee, 1903-1906.