And yet Caesar never mentions this fort, for the natural reason that he would have been entirely unaware of its existence and name. A medieval monk rehashing Caesar's work would not have mentioned it either for the same reasons. Of further significance is the fact that Nennius writes in his Historia Brittonum: “Julius Caesar ... while he was fighting with Dolabella.”6 ... Dolabella being mistaken in Nennius's source-document for the personal name of a British warrior rather than the fort where the warriors were gathered, thus revealing that by the end of the 8th century AD at the very latest,
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