Deeds and documents (1668-1882) relating to properties mainly in in co. Flint (Axton, Bistre, Caergwrle, Coleshill, Cwm, Cwm Uwchglan, Diserth, Estyn or Hope, Hawarden, Holywell, Hope, Hope Owen, Huriathicke, Kilken, Kinnerton, Mould, Newmarket, Northop, St Asaph, Shordley, Skeiviog, and Whitford), but also in cos Denbigh (Denbigh, Henllan, Llanrwst and Lleweny), Chester (Chester and Dodleston), Brecknock (Devynnock), Anglesey (Amlwch, Coedana, Llanerchymedd, Llanbadrug, Llanddyfnan, Llanfechell and Llanfihangel Tre'r Beurdd), Montgomery (Berth Lloyd) and Pembroke (Amroth). The main families were Mostyn of Mostyn Hall and Hope of Broughton and Hope.

Deeds, documents and letters, 1638-1897, relating mainly to properties in Denbighshire and Shropshire, but also Caernarfonshire, Cardiganshire, Montgomeryshire, Merionethshire, Radnorshire and Cheshire; plans relating to the activities of railway companies mainly in the parishes of Gresford and Wrexham, Denbighshire, 1845-1849; and printed material, 1863-1897.