Tournai's role as Childeric I's royal seat and the historical importance of his grave discovery are both real and well-documented. A discrete, precisely dated 6th-century siege at Tournai matching the specific circumstances of Book IV Ch. 7 is not something this dossier can point to in a single confirmed primary source the way Vitry's shield-raising or Soissons's royal status can be — the chapter should be read as historically plausible scene-setting within the genuinely violent, siege-heavy Fredegund-Brunhild civil wars, drawing on Tournai's real strategic and symbolic weight, rather than as a citation of one specific documented siege. The yellow mist, Murdach's dragon transformation, and Gregory's 'Demonic Siege' record are entirely fictional.