Could a Dark Age Commander Have Fought in These Places?: One Expert Says No

I've asked a sub-Roman/Dark Age and Arthurian expert - Professor Christopher Snyder - about the Arthurian battles.

Essentially, in order not to bias him, I'm sending the map of HB sites as I've laid those out. Not telling him, though, that these are my Arthurian site identifications. Instead asking if he thinks the arrangement reasonable or at least possible for a sub-Roman ruler. Or if they look instead like something we'd find under Ulpius Marcellus or Severus.

Included is a note to the Caledonian site, as well as the Miathi one (Arthur's Bassas appears to Dunipace, directly between the two Miathi/Maeatae forts, and Artur of Dalriada is said to have died fighting the Miathi). With no specific reference to Arthur, of course.

Basically, I want his honest take on whether it is possible for a man of the newly fractured, post-Roman Britain to have fought battles in these theaters, or whether the pattern instead looks decidedly Roman.

Will be interesting to find out what he has to say.

RESPONSE (7 April 2025):

"Looking at your map, I would say that they are more likely to represent campaigns of a Roman general.  We know practically nothing about campaigns of post-Roman British military commanders.  If these are conjectured locations of battles from the Historia Brittonum, I would not use them as evidence for the fifth or sixth centuries."

In my book THE BEAR KING OF THE NORTH, I stress that a Dark Age Arthur on the Wall fighting in the old Brigantian territory and perhaps just to the north of the Wall makes sense, but that the extreme northern battles may mark intrusions into the list of Dalriadan battles or even folk memories of Castus.