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].