Transcripts of documents relating mainly to Merioneth: Instructions from the Council in the Marches to suppress felonies; charges to juries; a letter, with answer, to a gentleman in Wales touching suits in the Court of Star Chamber, 1598; a letter of recommendation of John Vaughan of Cair gay, 1601; a petition of the freeholders of Estymaner and Talpont; instructions to the Council in the Marches, 1606; a letter of Enianus, bishop of Bangor, to Lord John de Grey, 1310; orders for securing the peace of the Commonwealth; orders at Quarter Sessions, 1673; sentences against Hugh Nanney for incontinence, 1588, 1594; observations on tenures in Englefleld, Flintshire, and concerning a court held by Mr Mackworth; an order in the suit of Robert Lloyd v. Griffith Nanney, 1603; the opinion of George Lee concerning a Portuguese ship wrecked on the Merioneth coast, 1746; a draft petition for an Act to enclose Traeth Mawr and Traeth Bychan; a contract to erect a shire hall at Dolgelley, 1606; the divisions of Merioneth with their proportional assessments, 1689; a canvass for Mr Vaughan and a copy of R. W. Vaughan's address to Merioneth electors, 1796; a rental of Robert Morgan's estate; and the petition of Sir Robert Heath to Charles I.
Instructions to Sir William Bowes, Robert Bowes, and Lord Eure (Scottish border, 1589-1599), Sir George Carey in Ireland with the Earl of Essex, 1598, Mr Carrow Raleigh concerning musters, and Sir Thomas Shirley, Lord Sheffield, Dr Dale, and Mr Bodley (Low Countries, 1586-1598); instructions concerning the expedition to Spain, 1596; papers relating to the proposed Spanish marriage, 1623; speeches and petitions in Parliament, 1623-1626; a list of grants to the Duke of Buckingham and proceedings relating to his impeachment, 1626; and a letter by Ra: Eure, John Harbert, and Daniell Dunn from Breme, 1602.
Printed proclamations of the assumption of the style of King of Great Brittaine by James I, 1604, and of the calling in of testons, 2 Edward VI.
On the back of the former is a fragment of a Welsh poem beginning - 'a fi'n eiste'n obrydd...'

Political papers, [?1590]-[?1648], written by or accumulated by Edward Herbert. They include material relating to contemporary English and European politics, as well as political history and theory.

A volume, [c. 1630], containing various English political tracts, mostly concerning relations between England and Spain and the Spanish war against the Netherlands, together with extracts in Latin from works on ecclesiastical and royal power.
Written by three unidentified hands: hand I, pp. 1-2, 176-189 (possibly hand IV of MS II.13); hand II, pp. 7-124, 165-175; hand III, pp. 125-163. Marginal notes are by the same hand as those in Brogyntyn MS II.13.

Papers, 1644-1691, accumulated by members of the Herbert family of Cherbury during the course of their political activities. They include records and correspondence, 1644-1658, relating to the family’s role in the civil war throughout Wales, and their subsequent dispossession and rehabilitation; records and correspondence, 1660-1689, concerning the Montgomeryshire militia and the suppression of disaffected persons in the Welsh marches; and records and correspondence, 1660-1691, relating to the family’s support of Charles II and James II, including military service in France.

Records and correspondence, 1646-1698, accumulated by members of the Herbert family of Powis Castle during the course of their political activities. Most of the papers relate to the sequestration of their estates after the civil war, while others arise from the Herberts’ commitment to the Jacobite cause during and after the ‘Glorious Revolution’.