A collection of 264 items relating to the Lewis and Hughes families, which fall into three groups. The family papers include wills (original and copy) of William Lewis of Llysdulas (1741), Margaret Lewis of Llysdulas (1784), and the Rev. Edward Hughes of Llysdulas and Kinmel (1809), a mortgage (1788) and recovery (1799) of the Llysdulas estate, and the marriage settlement of William Lewis Hughes of Kinmel and Charlotte Margaret Grey (1804).
The Anglesey papers include deeds relating to properties in Llanwenllwyfo, Llanrhwydrys and Llanfair-yn-neubwll, Llechylched, Llandyfrydog, Llangeinwen, Penmon, Llanfihangel Dinsylwy, Amlwch, Llanfeirian, Llangadwaladr, Trefdraeth, Llaneilian, Penrhoslligwy, Llanfihangel Ysgeifiog, Llanbadrig, Llanallgo and Newborough. A few of the leases in this group concern the Anglesey mining activities of William Lewis Hughes, first Baron Dinorben, including the Parys Mine itself, copper and other ores under the Rhosmanach lands in Llanwenllwyfo, the Glan Traeth Colliery (Malltraeth and Corsddaugau Marsh) and the Berw Uchaf Colliery (Llanfihangel Ysgeifiog).
The Denbighshire and Flintshire papers consist of deeds and other documents relating to lands in Bodfari, Abergele, St. Asaph, Meiriadog and Cefn Meiriadog, St. George and Henllan.