At that time people in the Souvr'n reaches off Caledonia were not different ~
Now, to add some mystery and intrigue into this, they had, by that time, some marker genes from India suggesting that ancient Dravidians or Indo Europeans on their way to the ends of the Earth ended up here. Might find some Hindu religious signs on that same statue if you look real close.
So, gang, hep' me out ~ that Caracalla fellow has an interesting name ~ car a calla or the clearly Gaellic "Ker Ak Alla" ~ a sentence having something to do with HOUSE OF ALLA or HOUSE OF WALLA ~ or maybe it was "KER A KAL LA" which means something like House of the Conqueror of the Kal country was he even Italian, or was he another guy like Constantine ~ from Wales?