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National Library of Wales
Dynevor estate, records

Reference code(s): GB 0210 DYNEVOR

Held at: National Library of Wales

Title: Dynevor Estate Records

Short Title: Dynevor estate, records

Creation date(s): 1481-1875, 1933

Level of description: Fonds

Extent: 0.551 cubic metres (26 boxes, 1 roll, 24 volumes)

Name of creator(s): Dynevor estate


Administrative/Biographical history: Dynevor was held by the Rice family since the 15th century. Rhys ap Griffith of Dynevor was beheaded in 1531, his possessions being forfeited to the Crown. His son Griffith ap Rice managed to regain parts of his father's Pembrokeshire lands before being convicted of the murder of Mathew Walshe in Durham. On the accession of Elizabeth I he was pardoned, and in 1560, the forfeited lands were again restored to him, together with other lands in Pembrokeshire and Carmarthenshire, including the manor of Newton. (The name Dynevor Castle and occasionally Dynevor Park was a 19th century creation).
Griffith's son and heir was Sir Walter Rice of Newton, who married Elizabeth, eldest daughter of Sir Edward Mansel, of Margam, Glamorgan. The estate devolved in the male line for three generations, until Sir Edward Rice, who built the present mansion, died without issue. The estate then passed to his brother Walter Rice and then to Griffith Rice of Newton, M.P. for Carmarthenshire 1701-1710, who married Katherine, daughter and co-heiress of Philip Hobby of Neath Abbey. The Neath Abbey estate was partitioned into three parts, with the Rice family receiving the residue of the properties with 7/8 rights to minerals, excluding that under Graig and Longford land.
Griffith was succeeded by his grandson, George Rice, M.P for Carmarthenshire 1754-1779, who married Cecil, (Baroness Dynevor), only daughter and heiress of William Talbot, Earl Talbot of Hensol, Glamorgan, thus acquiring the Hensol estate. Cecil succeeded her father in the barony of Dynevor in 1782, and assumed by royal licence the surname de Cardonnell in 1787. Their heir was George Talbot Rice, 3rd Baron Dynevor, who assumed the additional surname of de Cardonnell by royal licence in 1793, but resumed the name Rice by royal licence in 1817. He was succeeded by his only son, George Rice, 4th Baron Dynevor, who assumed the additional surname of Trevor as inheritor of the Bromham estate from the Trevors of Glynde, Sussex, through the will of John 3rd viscount Hampden who died in 1824. He died without male heir so that the Dynevor estate passed to his cousin, Francis William, 5th Baron Dynevor, vicar of Fairford, Gloucestershire.
Francis' grandson was Walter Fitzuryan, 7th Baron Dynevor, who married Lady Margaret Child-Villiers, eldest daughter of the 7th Earl of Jersey. He re-assumed by royal licence the surname of Rhys in lieu of Rice. His heir, Charles Arthur Uryan Rhys, sold the Dynevor portion of the Neath Abbey estate in September 1946. This portion amounted to 2,620 acres, extending from Cilfrew to Crumlyn Brook at Jersey Marina, and included 13 farms and industrial sites. Richard Charles Uryan Rhys, 9th Baron Dynevor, inherited the remaining holding of the Llandeilo estate, comprising 23 farms and 2,000 acres, a ruined castle, a deer park with a herd of rare White Park cattle, and substantial unpaid death duties. Most of the estate has since been sold.
According to the 1873 return of owners of land, The Rev. William 5th Lord Dynevor, owned 10,509 acres in Wales (in Carmarthenshire and Glamorgan), with an estimated annual rental of £18,552.


Scope and content/abstract: 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.


Language/scripts of material: English, Latin

System of arrangement: Part of the 1936 deposit is arranged into two groups: Group A and Group B and chronologically within each group. The 1956 and 1959 deposits are arranged by parcel.

Conditions governing access: Readers consulting modern papers in the National Library of Wales are required to sign the 'Modern papers - data protection' form.

Conditions governing reproduction: Usual copyright laws apply

Finding aids: Hard copies of the catalogues of Group A and Group B are available at NLW and HMC. A preliminary catalogue covers the remainder of the archive by parcel. All three catalogues can be accessed online from
Further details relating to manorial records within the archive can be accessed online from


Appraisal, destruction and scheduling information: All records deposited at NLW have been retained. Parcel nos 22-25, including the day books, 1806-1807, of George Talbot Rice, 3rd Baron Dynevor, were returned (before 1972) to Dynevor.

Accruals: Accruals are not expected

Archival history: The 1936 deposit was arranged and catalogued by I. H. Jeayes of the British Museum for Lord Dynevor in 1889 and 1911. His numbering and arrangement have been retained.

Immediate source of acquisition: Deposited by the 7th and 8th Lords Dynevor, Dynevor Castle, Llandeilo, in 1936, 1956 and 1959.


Related material: Further papers relating to the Dynevor estate in Carmarthenshire is Carmarthenshire Archives Service, Dynevor Muniments. Further papers relating to the Hensol estate are National Library of Wales, Hensol Estate Records, and Glamorgan Record Office, DD Part 1. Further papers of the Neath Abbey Estate is West Glamorgan Archive Service, DD Part 2.


Note: Title supplied from contents of fonds

Archivist's note: Compiled by Mair James.
The following sources were used in the compilation of this description: The Dictionary of Welsh Biography down to 1940 (London, 1959); Burke's Genealogical and Heraldic History of the Peerage and Knightage (London, 1959); Hayward, Alan, 'The Barons Dynevor Dynasty', Neath Antiquarian Society Transactions 1988-1989; Jones, Francis, Historic Carmarthenshire Homes and their families (Newport,1997); James, Brian, 'The Great Landowners of Wales in 1873', National Library of Wales Journal XIV (1965-66).

Rules or conventions: This description follows NLW guidelines based on ISAD(G) Second Edition; AACR2; and LCSH.

Date(s) of descriptions: May 2002; amended June 2005.

Dynevor Estate (Wales) | Archives
Estate administration | Wales | Carmarthenshire
Estate administration | Wales | Glamorgan
Estate administration | Wales | Pembrokeshire
Manorial courts | Wales | Cadoxton-juxta-Neath
Manorial courts | Wales | Is Cennen
Manors | Wales | Cadoxton-juxta-Neath
Manors | Wales | Is Cennen

Personal names
Rhys ap Gruffydd , d. 1531
Rhys ap Thomas , 1449-1525 , Sir
Rice family , Barons Dynevor

Corporate names
Cadoxton-juxta-Neath Manor (Wales)
Dynevor Estate (Wales)
Is Cennen Manor (Wales)
Neath Abbey Estate (Wales)


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