The Dolwyddelan Codex
In The Silence of the White Shadow, a medieval codex is discovered at Dolwyddelan Castle in North Wales in 1896. It appears to record an agreement between the Welsh princes and the English Crown, suggesting a relationship that sits uneasily with accepted history and directly contradicts the scholarship of one of the novel’s central figures, Emeritus Professor Arthur Cavendish.
The Dolwyddelan Codex is entirely fictional, but the medieval politics and Victorian uncertainties that make it dangerous are not.
Within the novel, the document is imagined to have originated during the principality of Llywelyn ab Iorwerth, Llywelyn the Great, who died in 1240. His authority rested not only upon military power but upon diplomacy, law and the careful negotiation of his relationship with the English Crown. Medieval sovereignty was rarely as simple as the boundaries on a modern map might suggest. Authority could be layered, obligations contested and agreements capable of supporting different interpretations.
That ambiguity became important when I began thinking about the document at the centre of the novel. What if an agreement had survived whose wording allowed a later reader to interpret the relationship between Welsh and English rulers rather differently?
The history that followed gave the idea its significance. In 1267, Henry III recognised Llywelyn ap Gruffudd as Prince of Wales under the Treaty of Montgomery. Relations deteriorated after Edward I came to the throne, and following Edward’s campaign of 1277 the Treaty of Aberconwy sharply reduced Llywelyn’s territories. The uprising of 1282 brought a more decisive conflict. Llywelyn was killed that December, his brother Dafydd was captured and executed the following year, and Edward’s conquest brought independent princely rule in Gwynedd to an end. The Statute of Rhuddlan in 1284 established a new framework of English royal government in the conquered territories.
That transition from negotiation to conquest interested me more than the military history itself. An agreement that had once helped define a political relationship could acquire a very different significance after that relationship had disappeared. Words written in one political world might survive into another, where their meaning became inconvenient.
The manuscript I invented therefore preserves an alternative interpretation of an earlier settlement. It does not overturn the known history of medieval Wales. Instead, it creates uncertainty about how that history should be understood, which is much more useful in a novel concerned with evidence, interpretation and reputation.
The second part of the idea came from the nineteenth century.
By 1896, Welsh scholars and antiquarians were intensely interested in manuscripts, medieval literature and the recovery of the Welsh past. Yet scholarship also had to contend with material whose authenticity was uncertain. Iolo Morganwg, one of the most remarkable figures of the Welsh cultural revival, combined genuine antiquarian enthusiasm with extensive invention and forgery, some of which continued to influence ideas about Welsh history and bardic tradition long after his death. By the later nineteenth century, scholars were increasingly challenging claims that had previously been accepted.
That was precisely the intellectual environment I needed.
A newly discovered medieval manuscript in 1896 could not simply be read and accepted. Where had it come from? Who had written it? Was it contemporary with the events it described, a later copy, an altered version or a forgery? What did particular words mean when they were written, and how much of their apparent significance came from the assumptions of the person reading them?
Those questions allowed the codex to become more than a convenient mystery object.
For Arthur Cavendish, the problem is personal. He has spent much of his academic life constructing an interpretation of the past and has built his reputation upon it. The discovery at Dolwyddelan does not merely present him with new evidence. It asks whether he is capable of reconsidering something he has spent years believing to be true.
That, ultimately, is what interested me most.
Historical evidence does not arrive accompanied by instructions explaining what it means. Documents survive imperfectly, language changes and interpretation is shaped by what the reader already believes. A manuscript can remain physically unchanged for centuries while the significance attached to it alters completely.
The Dolwyddelan Codex never existed. The uncertainty surrounding it very easily could have.
And that is where the fiction begins.