Pennal Tower estate records of the Price family of Esgairweddan, Pennal, Merioneth, and the Edwards and Thruston families of Talgarth Hall and Pennal Tower, Pennal, Merioneth, including title deeds, 1501-1918, of the Esgairweddan, Talgarth Hall and Pennal Tower estates, mainly in Merioneth and Montgomeryshire, rentals of the Esgairweddan estate, 1604-1727, and Talgarth Hall, 1760-1855; financial paers, [c. 1558]-1918; estate correspondence, 1787-1925; family correspondence, 1727-1917; and the papers of Captain Edward Scott (c. 1752-1842) of Bodtalog, near Tywyn.

Records deriving from administration of the Clenennau, Glyn, Sylfaen and Ystumcegid estates in Caernarfonshire and Merionethshire, 1530-1902. The lands belonging to Clenennau were situated in Penmorfa, Gest, Llanfihangel-y-pennant, Beddgelert, Llanystumdwy, Caernarfon town, Pwllheli, Treflys and Ynyscynhaearn, Caernarfonshire, and in Llanfair[-juxta-Harlech], Llanenddwyn, Llanfihangel-y-traethau, Penrhyn, Ffestiniog, Penllyn, Llanfrothen and Nanmor, Merionethshire. The Glyn and Sylfaen estates lay in Talsarnau, Llanfihangel-y-traethau, Llandanwg, Llandecwyn and Llanaber; and Ystumcegid in Llanfihangel[-y-pennant], Llanystumdwy, Penmorfa, Cricieth, Clynnog and Penyfed. The records from each estate are similar, comprising rentals and related papers, [1535]-1849, accounts, 1534-1827, leases, 1530-1842, correspondence, 1609-1888, and miscellaneous estate administration papers, 1662-1902. It is interesting to note the relationships of the Owen family with the eighteenth century estate stewards, notably Anne Jones of Clenennau, Griffth Parry, John Parry of Brynbanon and Humphrey Owen of Lasynys.