RE: Accuracy / proof reading.
Now that would be an astounding revelation!
Could we please not have Hadrian's Wall dividing the English from the Scots or even the Romans from the Picts either. There was no nation of England until the 10th century and no nation of Scotland until the ninth at the earliest and really not until the 11th century (although there were kings of Scots before) - some four hundred years and more after the Wall went out of use.
The Wall was a frontier but also a porous one - one through which the Romano-British administration could control the passage of people and trade between Imperial Britain and the tribal lands beyond, lands which, one the other side of the wall, belonged to more or less friendly tribes (the more or less depending upon circumstances at the time) - at least not usually hostile - the tribes being, if anyone's still reading this - the Brigantes (chiefly south of the wall but who may have had some of their northernmost lands beyond), the Votadini to the north-east in what became Northumberland and the south-east of Scotland, the Selgovae to the north in what became the central Borders region, the Novantae to the west (Dumfries and Galloway) and the Damnonii to the north-west (Strathclyde). Only beyond them were the Pictish tribes and the Maetae (as in Dumyat and Myot Hill) encountered, who were indeed frequently hostile to their southern neighbours ("bloody Romanachs")!!
Sorry about the waffle but history's a particular interest of mine.