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.

Title deeds of the Dinefwr estate, 1514-20 cent., in Carmarthenshire, Glamorgan and Pembrokeshire; rentals and accounts, 1587-1777; court rolls of the manor of Iscennen, 1660-1710; a series of copies of royal grants, 1481-1517, to Sir Rhys ap Thomas; and documents relating to the attainder of Rice Griffith, 1531, and to efforts to reverse the attainder, 1547 to temp. James I; records of the Neath Abbey estate, including records of the manor of Cadoxton-juxta-Neath, from 1602; and coal-mining records, Glamorgan, 18 cent.-19 cent.

The papers comprise records that cannot be allocated to one of the specific constituent estates of the Tredegar estate. Papers relating solely to one of the constituent estates will be found with the records of that estate. Many of the papers listed here relate to (parts of) two or more of the pre-1806 Dderw, Friars, Palleg, Ruperra and Tredegar estates, or to (parts of) two or more of the post-1806 county-based estates of Breconshire, Glamorgan and Monmouthshire. -- John Morgan (1672-1719) of Tredegar inherited the Ruperra estates of John Morgan ('the merchant', dsp. 1715). Both the Tredegar and Ruperra estates included properties in both Monmouthshire and Glamorgan. Estate administration between 1715 and 1806 appears to have been on an ad-hoc basis, the subdivision of the Tredegar, Ruperra and Friars estates into rent 'collections' respecting neither the boundaries of the estates nor the county boundaries. These arrangements generated many individual records that related simultaneously to several estates; these records have been gathered here for convenience. -- Some records, such as those relating to woodlands, deal with an agricultural function across several estates, both before and after 1806. Other records, such as notices of assignments of leases, relate to the urban elements of the post-1806 Monmouthshire and Glamorgan estates. Other records relate to the latter days of the Tredegar estate, dealing simultaneously with the rumps of the various estates. In the case of yet further records, it has not been possible to assign them to their approprate estate. In each of these cases, these records have been gathered here for conveniece.

The estate administration records of the pre-1806 Ruperra estate (including Ruperra poperties in Monmouthshire), and the post-1806 Ruperra estate in Glamorgan and Glamorgan estate.

Records relating chiefly to the Welsh estates of the Wood / Lookwood family, comprising volumes of rentals and disbursements, 1830-1843, and manorial records, 1564-1849; about 550 autograph letters relating to the management of the Wood estates in Monmouthshire and Glamorgan, 1836-1853; over 500 deeds relating to properties in Glamorgan, Monmouthshire, Anglesey, Breconshire, Radnorshire, Surrey and Middlesex, 1640-1891; and documents relating to varous industrial activities, 1838-1905.

Correspondence and other papers, 1771-1872, of the Glyn family, baronets, of Ewell, Surrey, concerning their estates in Glamorgan.
The papers principally consist of letters, and related items, from Thomas Bassett of Bonvilston, solicitor, to Sir Lewen Powell Glyn, 3rd bart, his sister Anna, and mother Lady Catherine, concerning the sale of the Creiga[u] Estate in Cadoxton-juxta-Neath, Glamorgan, 1827-1829, 1839 (ff. 10-25), and Coed y Gloria, Llanedeyrn, Glamorgan, 1827-1838 (ff. 26-47); a valuation, by Evan W[illiams] David, Radyr Court, of Lady Catherine Glyn's properties in Glamorgan, 1842 (ff. 48-55); and correspondence of Sir George Glyn, 4th bart., with his land agent Evan W. David, 1860-1872, on various matters (ff. 59-76, 82-83, 88-91), and with T[homas] Picton Turbervill of Ewenny Abbey [i.e. Ewenny Priory], 1870-1871, concerning mineral rights at Trebanog, Llantrisant (ff. 78-81, 84-87).

Records of the Morgan family of Tredegar and Ruperra, later barons and viscounts Tredegar including deeds, 14th-20th cent. of the Tredegar, Ruperra, Dderw and Palleg estates in Monmouthshire, Glamorgan and Breconshire which document much of the growth of the towns of Newport and Cardiff in the 19th century; records of the lordship of Wentlloog (Newport) and many Monmouthshire manors, some 14-16 cent., but mainly 17-19 cent.; records of the manor of Brecon and of other manors in Breconshire, 17-19 cent. including the Great Forest of Brecon; records of industrial interests, mainly coal and iron in Glamorgan and Monmouthshire, 18-20 cent.; records of the Tredegar Wharf Company from 1807; and surveys, audit books, rentals, ledgers and leases for the Monmouthshire, Glamorgan and Breconshire portions of the Tredegar estate, 18-20 cent.; papers relating to Nova Scotia and Canada, 1730-1773, mainly of Richard Phillips, Governor of Nova Scotia, 1717-1749; and rentals and leases for the Mile End and Bow estates in London, 19-20 cent.