Well if you've seen this
You'll know that historical accuracy in the british isles is something that has clearly gone out of the window with the complete disregard for the
cumbric and brythonic people who lived in the
north-west of england and instead having them as 100% anglo saxon despite the fact that several areas in the north-west hadn't even been in anglo-saxon hands for more than a single generation.
And for that matter, historical accuracy everywhere seems to be more than a little bit, how to put this lightly, so comically terrible I don't even know whether to laugh or cry, especially with the 100% visigothic iberian peninsula (except for the basque bit) despite the fact that the visigoths had assimilated to the local vulgar-latin speaking culture about 200 years before the start date of 769
So yeah I wouldn't get your hopes up for anything of a high quality if I were you