Sub-fonds Clenennau letters and papers. - Clenennau Letters and Papers,

Identity area

Reference code

Clenennau letters and papers.


Clenennau Letters and Papers,


  • 1485-1698 (Creation)

Level of description


Extent and medium

13 volumes.

Context area

Name of creator

Biographical history

Archival history

Immediate source of acquisition or transfer

Content and structure area

Scope and content

Letters exchanged between members of the Maurice and Owen families of Clenennau and Brogyntyn, and other correspondence from friends or associates in Wales and England, together with a number of important official documents deriving from county administration in Caernarfonshire during the Tudor and Stuart periods, 1485, 1573-1698. Many of the early letters and papers, 1580-1622, relate to the joint deputy lieutenancy in Caernarfonshire of Sir William Maurice and Sir John Wynn, showing their preoccupation with the raising and organisation of militia troops for the defence of Caernarfonshire and for despatch to Ireland. Other topics include Sir William Maurice's position as deputy vice-admiral of North Wales and the protracted civil lawsuits in which he was engaged. The collection also constitutes an important historical source for the conduct of the Civil War in North Wales. Items from that period primarily concern Sir John Owen and his brother, Col. William Owen, Royalist commanders at Conwy and Harlech respectively, and their subsequent treatment under the Commonwealth and Restoration, 1643-1666. Many of the letters from 1678 to 1698 reveal the life of Sir Robert Owen, his debts, estate business, cultural interests and attachment to the Jacobite cause, together with contemporary political news. Apart from individuals already mentioned, prominent correspondents include the Privy Council of Elizabeth I, mostly through Henry Herbert, President of the Council in the Marches of Wales, 1587-1600; Sir Henry Johnes of Abermarlais, 1605-1616; Ralph, Lord Eure, 1607-1617; members of the Brynker family, 1603-1681; the Wynn family of Glyn and Sylfaen, 1625-1697; the Anwyl family of Park, 1636-1693; Charles I, Prince Rupert and Prince Maurice, 1642-1647; Lord Byron, 1644-1648; John Williams, Archbishop of York, 1645-1646; George Twisleton, 1649-1660; the Godolphin family of Abertanat, 1658-1698; John Gadbury, 1679-1688; and Edward Lhuyd, 1696-1697.

Appraisal, destruction and scheduling


System of arrangement

Arranged in three groups, reflecting the publication of the printed calendar, with each group mainly in chronological order: Clenennau 1-1089; Clenennau (Appendix I) 1-146; and Clenennau (Appendix II) 1-61.

Conditions of access and use area

Conditions governing access

Access to the original manuscript by authorised permission only. Readers are directed to use surrogate copies;

Conditions governing reproduction

Language of material

Script of material

Language and script notes

Physical characteristics and technical requirements

Finding aids

A hard copy of the catalogue is available at NLW. The catalogue may be viewed online <A HREF=""> ttp://<A>

Allied materials area

Existence and location of originals

Existence and location of copies

The Calendar of Clenennau Letters and Papers is on microfilm;

Related units of description

Related descriptions

Publication note

Pierce, T. Jones, Clenennau letters and papers in the Brogyntyn Collection (Aberystwyth: NLW, 1947).

Notes area


The Clenennau letters and papers, selected for their historical significance, were extracted from the main Brogyntyn estate and family records, calendared individually in detail, and published as a supplement to the Journal of the NLW. Unfortunately, this process removed the documents from their context, and researchers should give equal consideration to the remainder of the Brogyntyn estate and family records.


The calendar of Clenennau letters and papers is defective in many aspects and should be used with caution.


Preferred citation: Clenennau letters and papers.

Alternative identifier(s)

Virtua system control number


Access points

Place access points

Name access points

Genre access points

Description control area

Description identifier

Institution identifier

Llyfrgell Genedlaethol Cymru = The National Library of Wales

Rules and/or conventions used


Level of detail

Dates of creation revision deletion




Archivist's note

Series 691-734 and 735-773 revised by Lucie Hobson, September 2021.

Accession area

Related people and organizations

Related genres

Related places

Physical storage

  • Text: Clenennau Letters and Papers.