Records relating to the Brigstocke family, including deeds of properties in Carmarthenshire and Pembrokeshire prior their acquisition by the Brigstockes, 1496-1889; deeds and documents of members of the Brigstocke family, 1655-1912; miscellaneous deeds, documents and papers relating to the Brigstocke family and lands in Carmarthenshire, including the Dolhaidd estate, 1846-1892, Cenarth, 1741-1838, and Llandyfaelog and Kidwelly, 1772-1833; legal papers, 1751-1775; and deeds and documents collected by W. Evans George relating to other estates, including: papers of the Lewes family of Gellidywyll, mostly bills and receipts, 1741-1792; draft deeds of W. Evans George for property in the Lower Teifi Valley, Cardiganshire and Carmarthenshire, 1896-1922; sale and account books of W. Evans George and Sons, 1863-1884; printed material, 1837-1925; papers concerned with local elections in Cardiganshire, 1741-1937; weekly account book of the surveyor of the South Wales Highway for Llanfihangel-ar-arth, 1866-1873; records of the Court of Petty Sessions, Penrhiw-pal, Cardiganshire, 1903-1927; and records of the Newcastle Emlyn Town Improvement Committee, 1903-1906.

Miscellaneous extracts and notes relating mainly to Wales in the medieval period and to Pembrokeshire families.

Deeds and personal papers acquired by Francis Green, 13th cent.-1923, including deeds and papers relating to Pembrokeshire and to the Green family, 1806-1880; records from the office of James Summers, solicitor, Haverfordwest, 1826-1867. There are also deeds and documents, 1704-1898, relating to a number of Pembrokeshire families; miscellaneous deeds, 1701-1867; and miscellaneous papers, 1720-1868.

General correspondence, 1950-74, to Desmond Donnelly and carbon copies of letters from him, including letters form Dean Acheson, Sir Anthony Eden and Sir Roy Welensky and other prominent British and international political figures; papers relating to various topics including Pembrokeshire politics and general elections, 1916-1968, Donnelly's foreign travels and international affairs, 1949-1972, his publications, 1958-1966, the United Democratic Party, 1969-1970; a scrapbook relating to the British Empire Cricket Team, diary extracts, papers and other personal material, 1941-1974; copies and drafts of articles and speeches by Donnelly, 1949-1973; and a large group of press cuttings, 1921, 1946-1978. There is also a scrapbook belonging to John Wynford Philipps, 1897-1908.

A selection of manuscripts, [16 cent.]-[?1919], of the late Dr Henry Owen, from the Library at Poyston. They include the manuscript note-books of Dr Owen, and of Edward Laws, his friend and fellow worker on Pembrokeshire history. The older manuscripts include two in the hand of George Owen of Henllys; holograph letters of General Sir Thomas Picton (born at Poyston); and a rent roll of the rents belonging to the Bishop of St Davids, 1685.

Deeds and documents, 1553-1877, relating to properties in the parishes of Llandysilio, Llanfyrnach, Llanbedr Felffre, Lamphey and Mathri, co. Pembroke; Llanfihangel-ar-arth, Carmarthen town and borough, Llan-gain, Abergwili, Llanfihangel Rhos-y-corn, Newchurch, Llanfihangel Abercywyn, Llanybydder, Llanwinio, Tre-lech a'r Betws, Llanboidy, Aber-nant, Llangynnwr, Meidrim, St. Clears, Llandeilo Fawr, Llandybie and St. Ishmael, co. Carmarthen; Bangor [Teifi], Cellan and Caron, co. Cardigan. They include deeds for the Glandewely estate in Llanfihangel-ar-arth, 1553-1769, and the Golden Lion in Lammas Street, Carmarthen, 1771-1877.

A group of manuscripts that form part of an extensive collection of Pembrokeshire documents and papers from the offices of Messrs. Williams & Williams, solicitors, Haverfordwest.

Sermons preached originally in several parishes in Pembrokeshire and Cardiganshire, 1790-1792, by Thomas Davies.

Papers, [1300]-1936, from the library of Mrs Ethel Jones of Aberystwyth comprising material of Pembrokeshire interest, including estate rentals, farm accounts, correspondence relating to land tenure, rules of Milford Friendly Society and turnpike gate receipts at Haverfordwest; papers of or relating to the Goldwyer family of Marlborough and [?Bristol] which include a tour journal of 1799 and correspondence; together with miscellaneous accounts, legal precedents, correspondence and a volume of coats of arms, much of which material also relates to Pembrokeshire.

Estate accounts kept by Allen, together with Tenby town and harbour accounts and financial and other details relating to Pembrokeshire.

A copy, with manuscript notes by Allen, of Edward Laws: The History of Little England beyond Wales ... (London and Tenby, 1888).

One of two volumes containing Allen's copies, with manuscript notes by him, of Parts I-III of The Description of Pembrokeshire, by George Owen of Henllys ... Edited ... by Henry Owen ... (London, 1892-1906).

Allen's copy, with manuscript notes by him, of Old Pembroke Families in the Ancient County Palatine of Pembroke. Compiled (in part from the Foyd MSS.) [now in the National Library of Wales] by Henry Owen ... (London, 1902).

One of two volumes containing Allen's copies, with manuscript notes by him, of Parts I-III of The Description of Pembrokeshire, by George Owen of Henllys ... Edited ... by Henry Owen ... (London, 1892-1906).

Miscellaneous papers of Allen, mainly concerned with Pembrokeshire affairs.

A copy, in five parts, of Edward Laws: The History of Little England beyond Wales (London and Tenby, 1888), interleaved, with manuscript notes by Allen.

This file consists of a draft of a piece of writing on Pembrokeshire under the title 'The Welshness of Pembrokeshire'[c.1974]. This was possibly a draft for the leaflet Menna Gallie published about Pembrokeshire, Little England's Other Half, (1974).

Papurau Pwyllgor Rhanbarth Ceredigion o Blaid Cymru, yn cynnwys cofnodion,1939-1984; gohebiaeth,1944-1981; papurau'n ymwneud â gwaith a chyllid y Pwyllgor a'i ganghennau,1959-1971; papurau'r Gynhadledd Flynyddol,1976-1979; torion papur newydd,1970-1975; ymgyrchoedd, 1960-1965; adroddiadau misol Peter Hughes Griffiths, Trefnydd y pwyllgor rhanbarth,1970-1972; papurau Adran Merched Plaid Cymru,1973-1978; ffeiliau'r swyddfa ganolog, 1961-1967, a thaflenni printiedig o'r swyddfa ganolog, 1974-1985; cofnodion Cyngor Talaith Dyfed,1975-1977; gohebiaeth a phapurau ariannol cangen Aberystwyth, 1968-1979; cofnodion cangen Aberystywth,1959-1978; papurau, gohebiaeth a llenyddiaeth yn ymwneud ag etholiadau cyffredinol,1959-[1980au], ac etholiadau lleol,1963-1964. Mae grŵp ychwanegol o bapurau a dderbyniwyd yn 2000 yn dal heb eu catalogio. = Papers of the Ceredigion Area Committee of Plaid Cymru, including minutes, 1939-1984; correspondence, 1944-1981; papers relating to the work and finances of the Committee and its branches, 1959-1971; Annual Conference papers, 1976-1979; newspaper cuttings, 1970-1975; campaigns, 1960-1965; monthly reports of Peter Hughes Griffiths, the area committee organiser, 1970-1972; papers of the women's section, 1973-1978; central office files, 1961-1967, and printed leaflets from the central office, 1974-1985; minutes of the Dyfed Regional Council, 1975-1977; correspondence and financial papers of the Aberystwyth branch, 1968-1979; Aberystwyth branch minutes, 1959-1978; papers, correspondence and literature relating to general elections, 1959-[1980s], and local elections, 1963-1964. A further group of papers received in 2000 remains uncatalogued.

Mae dau grŵp o bapurau ychwanegol yn dal heb eu catalogio.

Treatises in Latin; a Greek vocabulary; material relating to the hundreds and parishes of Merioneth, Montgomeryshire and Pembrokeshire; 'the Syren & the hundredes of Engelonde'; rentals of several North Wales manors; an account of a tax paid by North Wales counties in 1701; a transcript of documents of King Alfred; etc.

Deeds, 1595-1777, relating to premises in the parishes of Crinow and Lampeter Velfrey, Pembrokeshire.