Historia Regum
| Author(s) | Title | Reference | |
|---|---|---|---|
| W.J. Gruffydd | Brut y Brenhinedd (Cotton Cleopatra Version), by John Jay Parry | 9/1, p. 44 | |
| Rachel Bromwich | Ymddiddan Myrddin a Thaliesin, by A. O. H. Jarman | 23/2, p. 112 | |
| John Morris | Celt and Saxon: Studies in the Early British Border, by Nora K. Chadwick | 33/2, p. 162 |