Early Dark Age Britain is notorious for being poorly recorded. Most of our information about the era comes from much later records, written centuries after the events they allegedly describe. There is endless debate from scholars, based on the literary evidence, surrounding the historicity of the kings of Britain of this era. However, there are a few cases where we do not need to rely on the later medieval records to know whether a given king really existed or not. There are about 200 stone inscriptions from Dark Age Britain. These inscriptions provide us with contemporary or near-contemporary insights into the kings of Britain at that time.
- Nudd Hael
- Conomor
- King Ithel
https://en.m.wikipedia.org/wiki/Petrarch
But I hope you googled it instead of waiting 12 hours for me to respond…
I was off when I said 1400s, it was 14th century. But pretty good off memory