Deeds and documents, 1555-1875, relating to properties in the counties of Pembrokeshire, Anglesey, Montgomeryshire; deeds, 1696-1868, of lands in the parishes of Llanfair Dyffryn Clwyd, Llanelidan, Efenechtyd, and Llanfwrog, Denbighshire; and documents, 1735-1868, relating to the Eyarth Estate, Denbighshire.

Political correspondence and papers accumulated by Godfrey Lee, 1968-1988, relating to Plaid Cymru activities in Newport, 1968-1978, Plaid Cymru's Montgomeryshire branch, 1977-1988, and Welshpool branch, 1978-1980; the work of Gwent Regional Council [of Plaid Cymru], 1969-1977; together with Plaid Cymru Conference Programmes, 1969-1988; and literature concerning the Merthyr Tydfil by-election, 1972.

Deeds and documents, 1870-1907, concerning the estates of the Crewe-Read family of Llandinam Hall, Montgomeryshire.

Letters, 1873-1918, to D. C. Lloyd-Owen, most of them concerning Montgomeryshire entries in the diocesan registries at St Asaph, Bangor and Hereford, and in parish registers, etc.

Deeds and documents relating to properties mainly in Montgomeryshire, 1615-1910.

Papers relating to families and estates in north Wales, including the West family, the Chirk Castle estate, the Hengwrt, Rug and Nannau estate, the Wynnstay estate, the Penbedw estate, the estate of Richard Willding of Llanrhaeadr Hall, Denbighshire, and the Whitehall-Davies family of Broughton Hall, Flintshire, and Llannerch, Denbighshire. Records and correspondence, including relating to abstracts of title, chapels, churches, conveyances, inclosures, industrial activity, law suits, mining, parliamentary elections, probate, railways, schools and tithe commutation. Office records, including cash journals, bill books and letter books, [19th century]-[20th century].

Deeds and documents of the Bennett family of Glanyrafon, Montgomeryshire, and the Owen family of Dolgoed and Llawrpenegoes, 1546-1946, relating mainly to properties in the parishes of Llanidloes, Llanwrin, Penegoes, and Trefeglwys, Montgomeryshire, and Talyllyn, Merionethshire; and a map of properties in Trefeglwys, 1819.

Survey, [1600x1675], relating to Ryston, Mountgom[er]y, Wititree, Tunebert, Stocton, Woderton, Marinton, the church of Churburye, and a warren in the manor of Worthin.

Papers relating to the administration of the Plas Power estate and household, including some properties belonging to the Chirk estate, some but not all of which became part of the Plas Power estate; also included are some records from other properties in England that were owned by the Myddelton family.

Papers, 1679-1983, of and accumulated by H. Noel Jerman, comprising: research papers, 1914-1975; files relating to his work in the Secret Intelligence services, 1941-1945; correspondence, notes and other papers relating mainly to archaeology, and also to his professional activities, 1948-1983; 'Notes and Memoranda' relating to events organised by the Cambrian Archaeological Association, 1883-1894; original records collected by him, 1679-1926, including deeds and documents relating to properties in Kerry, Montgomeryshire, 1679-1885, and Kerry School, 1843-1873, and copies of local newspapers, 1834-1868; records relating to the Dolforgan estate, including deeds and documents relating to properties in Montgomeryshire, Carmarthenshire and Merionethshire, 1807-1910, financial records, 1889-1939, and letter books, 1892-1930.

An additional consignment of materials of, and accumulated by, the late H. Noel Jerman (1909-1994), including his research papers relating to properties in Kerry and surrounding areas, papers relating to the Dolforgan estate, together with maps, sale catalogues, plans and photographs, and a lithograph of Dolforgan Hall by T. Way. This group remains uncatalogued.

'Canto y Gynulleidfa, sef Anthemau a Thonau cyfaddas i'w canu yn yr addoliad cyhoeddus, gan David Bynner ('Dewi Cadfan'), Llangadfan, Chwefror 8fed 1859'. The anthems are 'Praise the Lord, O my soul', 'The Congregational Anthem', and 'Moliant Seion'. Several of the hymn-tunes have titles of Montgomeryshire association, e.g. Beulah, St Cadfan, Cannoffice and Myfod.

Deeds and documents relating to Cardiganshire, 1590-1751; and Montgomeryshire, 1517-1770; deeds and documents relating to the Hughes family of Gogarth, 1669-1910; and miscellaneous items, 1692-1825.

Manuscripts, 1699-1898, from the collection of Michael Scott Archer, comprising miscellaneous papers relating mainly to Cardiganshire and Montgomeryshire.

An autobiography of Robert Thomas of Llanfechain, Montgomeryshire, written 1863-1864, describing his early life in Llanfechain and other places in Montgomeryshire and Salop, 1836-1852 (ff. 2-9 verso, 11-23 verso), a voyage from Liverpool to Melbourne, September-December 1852 (ff. 23 verso-51 verso, 56 recto-verso) and, in some detail, his life in the Australian goldfields between December 1852 and April 1854 (ff. 56 verso-149 verso). The volume also contains an incomplete summary of contents (f. 1 verso) and a log of his return voyage from Melbourne to London, May - August 1862 (ff. 10 recto-verso, 52-5).

Mr Gwynne kindly allowed the Library to produce print-outs of his database, comprising an index to Montgomeryshire marriages extracted from parish registers and bishop's transcripts, dating from the sixteenth century onwards.