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National Library of Wales
Hafodgaregog and Trefan estate, records

Reference code(s): GB 0210 HAFFAN

Held at: National Library of Wales

Title: Hafodgaregog and Trefan Estate Records

Short Title: Hafodgaregog and Trefan estate, records

Creation date(s): 1448-1841

Level of description: Fonds

Extent: 0.172 cubic metres (5 boxes)

Name of creator(s): Hafodgaregog and Trefan estate


Administrative/Biographical history: The Trefan estate based in the parish of Llanystumdwy, Caernarfonshire, was established by the 16th century. The estate was subsequently inherited by the Hughes family when Zacheus Hughes, the youngest son of Nanhoron Isaf, married Elizabeth, oldest daughter of John Owen and Jane of Trefan. Their grandson, Zaccheus Hughes (d. 1794) married Jane (1736-1765), daughter and sole heiress of Morris Wynne (d. 1739) of Hafodgaregog.
The Hafodgaregog estate, containing lands in Nanmor and Llandecwyn, Merioneth, and in Llangian, Caernarfonshire, descended in the male line of the Williams family until Morris Williams's heiress, Luce, died an infant in 1723. The estate then passed to her cousin Morris Wynne (d. 1739) from where it passed to the Hughes family.
Zaccheus Hughes, as well as owning Trefan as heir of his father, also owned three farms in Cwm Ystradllyn, the small estate of Braich-y-bib, and the larger estate of Cefn Isaf to the north of Trefan; adding Hafodgaregog to his properties on his marriage to Jane. Zaccheus and Jane's heir was their son, John Wynn Hughes (1760-1795) who married Jane Jones. Jane was a minor when she married and after John Wynn's death the marriage was declared void in 1808 following a lawsuit between Samuel Priestley, whose wife Mary was a cousin of John Wynn Hughes, and the Hughes family. John Wynn and Jane's daughter, Jane Wynn Hughes was deemed to be illegitimate and Mary Priestley became the rightful heir of Trefan. Mary had already inherited the land of Tyddyn Madog Goch on succeeding her father, Owen Jones. Samuel died relatively young and the estates came into the possession of his wife, Mary. In 1821 Mary purchased Bryndu from William Wynne of Peniarth.
When Mary died in 1845, the estate was split up between her two sons. Samuel received Trefan and the bordering lands, while John inherited the Hafodgaregog estate and the three farms in Cwm Ystradllyn.


Scope and content/abstract: Deeds, 1448-1841,including wills and marriage settlements; legal papers, [c. 1570]-1756; and accounts, 1731-1744, of the Hafodgaregog and Trefan estates mainly lying in Caernarfonshire and Merionethshire, together with the correspondence of Maurice Williams of Hafodgaregog, 1620-1666.


Language/scripts of material: English, Latin

System of arrangement: Arranged chronologically

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 catalogue under the former title, Dolfriog Deeds and Correspondence, are available at NLW and HMC. The catalogue under the current title, Hafodgaregog and Trefan Estate Records, can be accessed online from


Appraisal, destruction and scheduling information: All records deposited at NLW have been retained

Accruals: Accruals are not expected

Archival history:

Immediate source of acquisition: Deposited by Mrs Lloyd Priestly, Cricieth, in 1954


Related material: Further papers relating to the estates are Caernarfon Record Office, XD/8/6.


Note: Formerly Dolfriog Deeds and Correspondence. Current title supplied from contents of fonds; former title based on location of the archive previous to its acquisition by NLW.

Archivist's note: Compiled by Mair James.
The following sources were used in the compilation of this description: Gresham, Colin, Teulu'r Trefan ([Caernarfon],1982); Griffith, John Edwards, Pedigrees of Anglesey and Carnarvonshire Families (Wrexham, 1998 reprint).

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

Date(s) of descriptions: May 2002

Hafodgaregog Estate (Wales) | Archives
Trefan Estate (Caernarfonshire, Wales) | Archives

Personal names
Hughes family , of Trefan
Priestley family , of Trefan
Williams , Maurice , fl. 1620-1666
Williams family , of Hafodgaregog

Corporate names
Hafodgaregog Estate (Wales)
Trefan Estate (Caernarfonshire, Wales)


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