A transcript, [?1699] (p. 1), of the extent of Anglesey made before John de Delves, locumtenens of Richard Earl of Arundel, justiciar of North Wales, 26 Edward III (1352) (pp. 1-88); a list of freeholders of Anglesey, 1606 (pp. 1-30); an account of the gentry of Anglesey, arranged by commotes, and a list of sheriffs to 1676, both in the hand of William Williams, Beaumaris, but with earlier pedigrees incorporated (pp. 1-94); 'a note taken of the demeanes nowe heald and belonginge to the Heanllis' (pp. 95-96); and a note of a survey of the lands of Arthur Bagnall in Tyndaethwy and Menai (pp. 99-102).

Deeds, documents and plans, 1455-1895, relating to properties in Anglesey, Caernarfonshire, Denbighshire, Merionethshire and Montgomeryshire; including papers of the Poole family, owners of the Caenest and Pencraig estates in Merionethshire and Anglesey; surveys, [c. 1770] of the Caenest and Pencraig estates; and building leases for properties in the port of Amlwch, [late 18th century].