Title deeds of properties mainly in the several Flintshire parishes of Meliden, Rhuddlan, Hawarden, Northop, Halkyn, Llanasa, Gwaunysgor, Diserth, Cwm and Whitford, but also in Denbighshire and south Cheshire. They include a mid-14th century deed relating to land in Nant, Rhydorddwy and Garthgarmon; a 'tir prid' conveyance of land in Alltham, Flintshire, 1458; settlements of the Prestland family of Wardle, Cheshire, 1502, 1517, 1545; marriage and trust settlements of several members of the Conway and Mostyn families, 1546-1657; deeds relating to purchases and a mortgage by Thomas Conway in Nant, Gwaunysgor, Gronant and Goldgreave, 1557, 1578, 1587; the will of Catrin Loyd [of Voelas], 1576; and a schedule of deeds relating to Nant, 1624-1686.

Title deeds of properties belonging to the Brymbo estate near Wrexham, originally owned by the Griffith family and later administered by William Owen of Brogyntyn, 1555-1765; deeds of properties belonging to the Clayton family of Lea Hall in Preston Gubbals, Shropshire, 1682-1719; and a small number of deeds referring to premises in Bangor-is-coed, Wrexham and Gresford, 1574-1725, placed here on evidence connected with Mary Clayton and her first husband, Robert Jeffreys of Acton.

Title deeds of properties belonging to the estates of Abertanat in Montgomeryshire, Shropshire and Denbighshire, 1476-1765, Cemais, Montgomeryshire, 1545-1690, and Penrhos, Montgomeryshire and Shropshire, 1508-1828. Some of the sixteenth and seventeenth century Montgomeryshire deeds clearly illustrate the development of the modern rural landscape; they record the acquisition by single landowners of mediaeval field strips previously in multiple ownership.

The archive comprises entirely of deeds and documents, 1446-1934, relating to the Caerhun estate in Anglesey, Caernarfonshire, Denbighshire, and associated estates of Downing, Flintshire, and Llechwedd Garth in Montgomeryshire.

Estate records of the Cernioge estate, Denbighshire, and records of the Kenrick family of Cernioge and Nantclwyd, 1502-1856, comprising deeds, 1502-1832, of the Cernioge estate; rentals, 1664-1771, 1806-1813; transcripts of documents relating to the abbey of Conway; and correspondence, 1806-1827.

Estate records, 1429-1834, and legal papers,1733-1779, of the Eriviat estate in the parishes of Henllan, Denbigh, St. Asaph, etc., and the Rhydonen estate in Llantysilio, Denbighshire, together with some deeds and legal papers of the Clough family of Plas Clough and the Salesbury family of Bryn y Barcut, both Denbighshire.

Deeds, 1313-[1825], from the collection of Angharad Llwyd (1779-1866), antiquary, including deeds relating to the Salusbury family of Lleweni, 1313-1727, and one to the Myddelton family of of Chirk, [c.1640].

Notes and abstracts, [c. 1896]-[c. 1909], by A. N. Palmer relating mainly to the history and antiquities of Wrexham and its environs including extracts from vestry books, pedigrees of Denbighshire families, and abstracts of deeds and documents.

Records of the Wynne and Edwards families of Plas Nantglyn, Denbighshire, including Welsh literary manuscripts, [17 cent.]-[18 cent.]; deeds and documents, 1527-1817; correspondence, 1827-1876; and printed items.

Deeds, copies of deeds and drafts of deeds concerning land and other property in the county of Denbigh (including the lordship and manor of Chirk and Chirkland and their constituent townships, etc., the lordship of Bromfield and Yale, the manor of Ysbyty Dolgynwal, the manor of Ruthin or Dyffryn Clwyd, the hundreds of Isaled and Is Dulas, and the parishes, townships, etc., of Abergele, Abenbury, Banhadla, Barrog, Bersham, Bodlith, Bodrychwyn, Borras Hwfa, Borras Riffri, Bodrual, Brymbo, Burton, Ceunant, Cilan, Cilmediw, Clocaenog, Coed Cristionydd, Cornwall, Creigiog Uwch Glan, Cristionydd Cynrig, Cristionydd Fechan, Crogen Wladys, Cynllaith, Chwibren, Chwibren Uchaf, Chwileiriog, Denbigh, Disgarth, Dutton-y-Brain, Eryrys, Esclusham, Faenol, Gartheryr, Garthgynan, Gwernosbyn, Gwersyllt, Gwytherin, Hafodgynfor, Hafodybwch, Henfachau, Henllan, Higher Chirk, Holt, Llanarmon yn Ial, Llanfair Dyffryn Clwyd, Llanfair Talhaearn, Llanfihangel, Llangadwaladr, Llangedwyn, Llangollen Fechan, Llangwm, Llanrhaiadr yng Nghinmeirch, Llanrhudd, Llansannan, Llansilin, Llanynys, Lledrod, Lleweni, Lower Chirk, Marchwiail, Melai, Minera, Moelfre, Morton Anglicorum, Morton Wallicorum, Nantyr, Peniarth, Penyclawdd, Penyfed, Rhan-hir, Rhiwlas, Rhydeidion, Ruabon, Ruthin, Sutton, Sycharth, Talhaearn, Tregeiriog, Trewern, Wrexham, Wrexham Abbott, Wrexham Regis, Y Ddwyfan and Ystrad Cynon), together with associated memoranda, articles of agreement, marriage settlements made by members of the Myddelton family, bonds of obligation made by persons resident in the county, and notes. A few of the deeds relating to Denbighshire also concern land in Montgomeryshire, Cheshire, Merionethshire, Flintshire and Shropshire.

Deeds concerning land in the county of Montgomery (including the townships of Allt y Brain, Berriew, Bodyddan, Bodynfol, Brithdir, Buttington, Castell, Churchstoke, Coedtalog, Craen, Dolgwden, Dolwen, Dythienyth, Halghton, Hengynwyd, Hirnant, Hurdley, Cynwyl, Llandinam, Llanfeddian, Llanidloes, Llanllugan, Llanfair, Machynlleth, Maestregymer, Manafon, Montgomery, Noddfa, Pennant, Welshpool, Rhydfaes, Rhywhiriarth, Rhysnant, Simons Castle and Trefeglwys), together with bonds of obligation made by persons resident in the county. A few of the deeds also concern land in Denbighshire.

Papers of R. H. G. Smallwood, together with deeds and documents collected by him, 1317-1943, mainly relating to the Wrexham area and mainly 17th-19th cent., comprising deeds and other papers, 1317-1890, concerning various families and properties in Wales, England and Jamaica; Smallwood's notebooks, files, indexes, etc., on genealogy, especially of the Smallwood family, and local history, freemasonry, numismatics and archaeology; material relating to shorthand, including volumes written in shorthand, [17th cent.]-[18th cent.], catalogues, letters, and material relating to Welsh, American, German, Austrian, Italian, French and English shorthand systems; and various letters, bills, receipts and memoranda [late 18th cent.]-[early 19th cent.).