| Idris Foster |
Gwaith Dafydd ap Gwilym, by Thomas Parry |
|
23/1, p. 41 |
| G.L. Harriss |
Aymer de Valence, Earl of Pembroke, 1307-1324, by J. R. S. Phillips |
|
|
| G.L. Harriss |
Politics, Finance and the Church in the Reign of Edward II: Walter Stapledon, Treasurer of England, by Mark Buck |
|
54/2, p. 297 |