Estate and family records, 1183-1957, of the Wynn and Williams Wynn family of Wynnstay, Denbighshire. The archive includes a group of architectural drawings, c. 1770, by James Byres; a group of early charters and deeds, 1183-1676, from the Cistercian Abbey of Strata Marcella (Ystrad Marchell) near Welshpool, Montgomeryshire, and elsewhere; antiquarian, legal and literary manuscripts; account rolls of Sir Richard Wynn, Treasurer to Queen Henrietta Maria, 1627-1649; manorial records relating to manors and boroughs in Denbighshire, Montgomeryshire and Shropshire, 1364-1895 (1934-40 and 1952 deposits); parliamentary election papers for Anglesey, Cardigan (county and borough), Denbighshire, Flintshire and Montgomeryshire, 1621-1883; family and estate correspondence, including part of that of Sir William Williams (1634-1700), Speaker of the House of Commons; rentals and account books, 1300-1925 (preserved in an almost unbroken series from the time of Sir William Williams); over 5000 title deeds and documents, [pre-1290]-[c. 1910], mainly relating to properties in the six North Wales counties and Shropshire, including records for Glascoed and Llanforda, Llwydiarth, Llangedwyn and Glanllyn, Plas-y-Ward, Rhiwgoch and Mathafarn, estates acquired either by marriage or purchase in the seventeenth and eighteenth centuries; together with papers relating to administration of the estates, 1573-1946; family papers, 1499-1913, county and central government administration papers, 1608-1880; two discrete groups of Much Wenlock estate records, 1534-1860, and Nantcriba estate records, 1381-1680; and various maps. There is an additional group of papers relating to the Wynnstay estate which came from the office of Longueville Gittins solicitors, Oswestry, dated 1582-1957.