Documents collected by Col. Sir John Conway Lloyd, including over a thousand deeds, 1323-1870, relating to properties in the counties of Brecon, Glamorgan, Hereford, Monmouth, Radnor, Cardigan, Carmarthen, Gloucester, and London; together with various documents, including letters and papers relating to the Lloyd family and other estates. In addition, the archive consists of deeds and documents, 1588-1864, mainly of industrial interest accumulated by John Lloyd (1833-1915), pertaining to the New Weare ironworks, Goodrich, Hereford; the Hirwaun ironworks; the Beaufort Iron Company, the Clydach ironworks; the Dowlais Iron Company; and the Bute Works. A substantial group of Dinas Estate records has been transferred to the Maybery Collection.