Horsa
| Author(s) | Title | Reference | |
|---|---|---|---|
| Kemp Malone | A History of the Anglo-Saxons, Two volumes, by R. H. Hodgkin | 6/1, p. 57 | |
| Bedwyr Lewis Jones | Armes Prydein: The Prophecy of Britain from the Book of Taliesin, by Ifor Williams, Rachel Bromwich | 43/2, p. 181 |