1. 2007
2. Dechreuadau a gweithgarwch cynnar John Jones (Myrddin Fardd)

   Efans, N. (Author), 2007

   Student thesis: Doctor of Philosophy

3. 2006
4. Nofel hanes a rhagymadrodd

   Griffith, G. (Author), Sept 2006

   Student thesis: Doctor of Philosophy

5. Hanes y ddrama ym Mon 1930-1975

   Williams, O. A. (Author), 2006

   Student thesis: Doctor of Philosophy

6. 2001
7. Diwylliant ar waith: astudiaethau gwerin o Gymru

   Gwyndaf, R. (Author), Jarvis, B. (Supervisor) & Thomas, G. (Supervisor), 2001

   Student thesis: Doctor of Philosophy