Letters to Col. William Owen and his wife Mary, 1634-1670. Correspondents of note include Richard Anwyl discussing, among the more common topics, the post of the Lord Lieutenant of Ireland, other royal appointments and the union of Scotland 1669; George [Griffith], bishop of St Asaph, on appointing a suitable vicar and schoolmaster at Oswestry, 1664; Owen Griffith on hostility to the Dutch, seizure of commodities and a frigate accident in London, 1667; and Robert [Morgan], bishop of Bangor, on a preferment to the living of Llanegan in Llyn, 1669. Other correspondents include Thomas Mackworth, 1663, John Mordaunt, 1655, and Penelope Owen, 1634, and further, general topics are: events in parliament; estate business in Shropshire, Penychen and Hitchin, 1655-1669; sequestration of the estate of Sir John Owen, 1659; the taking of stone from the demolished town walls of Oswestry, 1668; and obtaining a college place for William Owen the younger.

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].

Papers of Richard Emrys Bonsall, mainly architectural papers relating to buildings in the Aberystwyth area, Cardiganshire, 1930-1964, including notebook with architectural notes, [c. 1930]-1935; diary of Hywel Owen Jones, 1930-1933; contract certificate counterfoils, 1938-1963; building specifications, 1946-1964; papers relating to alterations to the Wynnstay Arms Hotel, Oswestry and the Royal Hotel, Llangollen, 1955-1964; and copy letters from him, 1959-1961.

Mae'r ffeil yn cynnwys enwau tanysgrifwyr o swllt ac uchod a gyfrannodd at gronfa adeiladu capel newydd y Methodistiaid Calfinaidd ym Mhontrobert yn 1865, ac hefyd hanes adeiladu'r capel. Rhestrir y tanysgrifwyr fesul dosbarth: Dosbarth yr Adfa, Dosbarth Llanfair, Dosbarth Llanfyllin a Dosbarth Croesoswallt.