Research papers - Margaret Davies, Ychwanegu i'r clipfwrdd B101-125. Is-is-fonds [post 1902]-1964. Rhan oElwyn and Margaret Davies Papers,
Teyrdan estate deeds and documents, Ychwanegu i'r clipfwrdd 2929-2941. Is-is-fonds 1735-1826. Rhan oCoed Coch and Trovarth Estate Records