The sub-fonds comprises deeds and legal papers, 1620-1928, relating to the Clettwr estate, Cardiganshire, the Cilgell Isaf estate, Carmarthenshire, and to premises in the parish of Aberdare, Glamorganshire.

Deeds and documents, 1631-1861, relating to the Llanllyr estate in Cardiganshire, Carmarthen, and Llangynog and Merthyr in Carmarthenshire, together with a toll book, 1796-1833, of Talsarn fairs.