Sub-Roman Britain (Cavalry etc)

[Agraes]

It depends where.
In the west we have evidence of continuated use of some hillforts and small defend homesteads from the late iron age onwards, see chapters about Wales and the South-west in Dark's Britain and the End of the Roman Empire. I was talking about the Breton laws, eventually dated from the 5th century, and those are celtic laws, with very few roman traditions despite their name Excerpta de Libris Romanorum.

Of course the irish sea regions are different eventually because of irish settlers, trade and exchanges between those British and one of the last "celtic" land, but in the end Breton, Cornish or Welsh are... Brittonic languages, not gaelic.

I think we can have a very different view from Britain looking at different regions...
I support Laycock's views on post-roman Britain. It's not for him a question of culture - be it either celtic british, roman or germanic - but a question of regional identities which didn't "re-emerged" but still existed under roman rule.

For the chariot thing, Im quite suspicious. Snyder mentions in An Age of Tyrants some finds that belonged to a chariot in Dinas Emrys, maybe someone got the excavation report to bring some light on this?

A few of Breton genealogies can be guessed to be taken from older sources. That was at least stated by Léon Fleuriot about a name such as "Outham Senis", beeing a very old version of Eudaf Hen. Hagiographic sources are also complicated to use, but some can be used with care, essentially the Vita Samsoni of Life of St Samson, of 7th or 8th century date and the Vita Pauli Aureliani of 9th century date but with some interesting material. A lot of progress have been done in the study of those sources in the last decades by people such as André-Yves Bourgès or Bernard Merdrignac.