Deeds relating to the Picton Castle estate, mainly in Pembrokeshire, 1285-1981; manorial records of the manors of Manorbier, Penally, etc., 1601-1851; rentals of the Picton Castle estate, 1710-1981; of the Slebech estate, 1919-1930, and of the Tregyb estate, 1965-1974; Picton Castle estate accounts, cash books, ledgers,etc., 1717-1971; records relating to coal mining in Pembrokeshire, 1632, 1684-1857; and estate and family papers,1656 -1928, mainly correspondence.

Records of the Slebech estate, Pembrokeshire, mainly title deeds, [late 13 cent.]-1926, including deeds relating to the Knights Hospitallers of the Commandery of Slebech, mainly 14th cent., ministers accounts, 1357-1605, of the Pembrokeshire estates of the Mortimers, earls of March; manorial records, 1292-1819; letter books, letters, accounts, etc., relating to Nathaniel Phillips's Jamaican sugar plantations, 1759-c.1822; and family papers of the Barlow and de Rutzen families of Slebech and the Phillips family of Lampeter Verfry and Slebech, 1542-[c.1919].