The tenure of this governor is documented in a single classical source, by Cornelius Tacitus in The Agricola (chapter XVII, verse ii).
"Cerialis, indeed, would have eclipsed the vigilance or the credit of any other successor; but Julius Frontinus was, so far as a subject of the emperor could be, a great man, and he shouldered and sustained the burden cast on him: his arms reduced the Silures, a powerful and warlike race; he surmounted not only the valour of the enemy but also the physical difficulties of their land." (Tacitus Agricola XVII.ii)
...
| Name | N.G.Ref. | Description |
|---|---|---|
| Isca Silurum (Caerleon, Gwent) | ST3390 | legionary fortress Legio II Augusta. |
| Deva (Chester) | SJ4066 | fort |
| Levobrinta (Forden Gaer, Powys) | SO2098 | fort |
| Mediomanum (Caersws, Powys) | SO0292 | fort |
| Cicucium (Brecon Gaer, Y-Gaer, Powys) | SO0029 | fort |
| Coelbren, West Glamorgan | SN8510 | fort |
| Castell Collen, Powys | SO0562 | fort |
| Blaen-cwm-Bach, West Glamorgan | SS7997 | large camp 3 miles E of Neath |
| Twyn-y-Briddallt, Mid Glamorgan | ST0098 | large camp 9½ miles W of Gelli-gaer |
| Pen-y-Coedcae, Mid Glamorgan | ST0687 | large camp 6½ miles W of Caerphilly |