Administrative records of the Brogyntyn estates, mainly in North Wales and Shropshire, [1380s]-1951. They relate to Clenennau, Glyn, Sylfaen and Ystumcegid in Caernarfonshire and Merionethshire, 1530-1902; Nant in Flintshire, [1380s]-1685; Brogyntyn (Porkington) in Shropshire and Llanddyn in Denbighshire, 1634-1951; Lea Hall and Brymbo in Shropshire and Denbighshire, 1586-1750; Abertanat, Cemais and Penrhos, mainly in Montgomeryshire, 1653-[c. 1949]; the Irish estates, 1775-1887, and miscellaneous estates, 1590-1938. The group includes rentals, accounts, leases, and other estate administration papers including those relating to property, exploitation of resources, livestock, staff appointments, enclosures and other improvements, surveys and valuations, and letters relating directly to estate management.