Remember back in 2014 when the BBC gave Rory Stewart - then a Tory MP actively campaigning against independence - 2 hour-long programmes to advance the idea that the Anglo-Scottish border was artificial and that beneath Scotland and England lay a forgotten "Middleland"?
His own publicity described the border as "fabricated", while Stewart, during the 2014 plebiscite, presented “Middleland” as a lost nation with its own kings, languages & traditions. His BBC series went out 5 months before the vote. Stewart is still banging that same drum.
Here's the problem with starting from a conclusion and then making the history fit it:
Stewart begins with an invented "Middle land" and works backwards, selecting genuine historical facts that can be arranged to look like evidence for it. Strathclyde existed. Cumbria existed. David ruled the Cumbrians. David later held Carlisle. Put those surface facts beside one another, compress the chronology, blur changing jurisdictions and insert a couple of "hences", and suddenly they appear to describe a continuous "vanished kingdom".
In contrast Neil McGuigan does what historical method requires: he takes the evidence on its own terms, separates periods Stewart telescoped together, distinguishes titles from territories, & asks what jurisdiction David actually exercised at each stage of his life.
David's earlier position as ruler of the Cumbrians/Strathclyde and his much later control of Carlisle were seperate political arrangements. As McGuigan points out, Carlisle came decades later and in a different political context, when David was pursuing the Northumbrian earldom for his son Henry. Remove Stewart’s chronological compression and the neat Dumbarton-to-Carlisle continuity disappears.
What makes this particularly telling is that McGuigan’s own specialist field is almost exactly the ground Stewart is trying to turn into "Middleland". His PhD was Neither Scotland nor England: Middle Britain, c.850–1150. Its subjects include Northumbria, the Kingdom of Strathclyde, Cumbria, Bamburgh, the Anglo-Scottish border, David I and the formation of political structures across northern Britain.
That illustrates the methodological difference rather neatly.
McGuigan uses "Middle Britain" as an analytical description for a complicated region and respects the distinct kingdoms, political communities, lordships, boundaries and chronologies revealed by the evidence. His thesis explicitly investigates those political structures and how they changed over time.
Stewart does something different. He takes a politically motivated modern umbrella concept, turns it into invented history - a supposedly lost "nation" or "kingdom" - and then selects pieces of the histories of Strathclyde, Cumbria, Northumbria and elsewhere to give apparent substance. Dumbarton, the capital of Strathclyde, consequently becomes for him the "ancient capital" of Middleland.
The individual facts are precisely what make this persuasive to a non-specialist. Many of them are perfectly real. The distortion occurs in the joins: what's left out, which centuries are collapsed together, which changes in political control disappear, and Stewart's repeated "hence" encourages the audience to infer without actually demonstrating it.
That's the danger of reasoning backwards from a desired conclusion. If you've already concocted a conclusion almost any cross-border connection can become another piece of corroboration.
Open historical enquiry works in the opposite direction. Establish the evidence and chronology first. Preserve distinctions that complicate your argument. Keep separate things separate when the sources require it. Acknowledge discontinuities and uncertainty. Then ask what larger interpretation the evidence will actually sustain.
You don't begin by deciding that an invented "Middleland" existed and then range across several centuries collecting facts which, stripped of enough context, can be arranged to make it appear that it did.
Some telescoping here. David held Carlisle later in his career, as part of the earldom [of Northumbria/Bamburgh] meant for his heir(s). He was also ruler of the Cumbrians/Strathclyde, last titled separately, but this did not encompass Carlisle when Ranulf le Meschin etc held that