Three Welsh Grammars; The Dream of Maxen Wledig; Elucidarium; Commotes and Cantreds of Wales; Astronomi; etc., mainly in the hand of Thomas Williams before he began to sign himself 'Thomas ap Wiliam physicwr'. Pages 112-114 and 129-130 are in the autograph of Robert Vaughan of Hengwrt, 16th May 1656, and Darogan Beli (p. 216) appears to be written by D. Jones (?o Lanvair Dyffryn Clwyd).