Deeds and other records, 1538-1826, relating to properties mainly in Merionethshire, particularly lands formerly belonging to the dissolved monastery of Cymer [p. Llanelltyd] near Dolgellau, and the rectory of Llanegryn, Merionethshire.

Title deeds of lands acquired through 'tir prid' conveyances, purchase, leasehold and exchange by the successive owners of the Clenennau estate, lying in Caernarfonshire, mainly in Penyfed and Pennant, Dolbenmaen, Penmorfa and the surrounding parishes, 1427-1732, and in Merionethshire, around Llanfihangel-y-Traethau, Harlech and Llanfrothen, 1454-1833. Several of the deeds refer to crown lands, which were much disputed and subject to investigation by government officials. Some of the Merionethshire deeds are accompanied by or endorsed with nineteenth century notes

Title deeds of lands acquired through purchase, 'tir prid' conveyances and leasehold by the successive owners of the Glyn estate, mainly in Llanaber, Lanbedr, Llandanwg, Llandecwyn, Llanenddwyn Llanfair[-juxta-Harlech] and Llanfihangel-y-traethau in Merionethshire, 1499-1807; the Sylfaen estate, mainly in Llanaber, Merionethshire, and to a lesser extent, Dolbenmaen, Caernarfonshire, 1509-1698, [1811]; and for lands belonging to the Owen family of Ystumcegid and later to the Wynns of Glyn, in the locality of Dolbenmaen, Llanfihangel-y-pennant, Llanystumdwy and Criccieth in Caernarfonshire, 1597-1672. Several of the deeds refer to former crown lands in Merionethshire.

Deeds and leases concerning land in the county of Merioneth (including the townships of Bala, Betws, Ciltalgarth, Corwen, Cynwyd Fawr, Cynwyd Fechan, Faerdre Isaf, Faerdre Uchaf, Garn, Gwelwar, Gwernefail, Gwyddelwern, Llandrillo yn Edeirnion, Llanegryn, Llanelltud, Llanendwyn, Llanfachreth, Llanfor, Llanfihangel, Llangywer, Llannerchfydaf, Llansanffraid Glyndyfrdwy, Llanycil, Llanymawddwy, Llanuwchllyn, Maentwrog, Maestran, Mawddwy, Nannau, Penaran, Pennant, Pennant Edeirnion, Pennant-lliw, Pennant Mawddwy, Prys, Rhyd-criw, Tir Llannerch, Trawsfynydd, Tyfos and Ucheldre), together with bonds of obligation made by persons resident in the county. A few of the deeds also concern land in Caernarfonshire (including the townships of Aberach, Beddgelert, Botach, Caernarfon, Conwy, Cricieth, Dwygyfylchi, Llandudno, Llanfihangel, Llanllyfni, Llanwnda and Nefyn).