Estate and family records of the Williams family of Penpont, Breconshire, mostly relating to the estate in Breconshire, including deeds, 1314-1871; rentals, 1769-1807; assessments of taxes (window, land, house and horse) in the hundreds of Merthyr and Devynnock, Breconshire, 1743-1787; and letters from members of the Williams family of Penpont, 1793-1828.