Nennius wrote this brief history of the Britons around 828 AD, although his prologue implies it was written in 858, and elsewhere it is implied it was compiled in the tenth century. Since it went through the hands of multiple scribes over the years it is possible that certain sections were written at different times, and not all by Nennius.
Like a lot of old history, it’s part factual, part traditional, part myth, part genuine. Humble Nennius belittles his own competence as a scholar and apologizes for what he expects the reader to find a drab and worthless tome. The man was hard on himself. His book is a good short history of the peoples of the British Isles. He tells us of Roman invasion and occupation, relating many of the myths mixed with genuine history about how Britain was first populated, like the coming emperors, the Brythonic slaughter of these emperors, long voyages of ancient tribes, and constant waves of newcomers, invaders, and the rule of many kings until giving more space to the reign of Vortigern. The lives and achievements of saints, like St. Germanus and St. Patrick, are told with enthusiasm and awe. So too are Vortigern’s failures, for inviting the Saxons to the Isle in hopes they would help put down the barbarian uprisings. The Saxon problem became a bigger problem than the barbarian problem.
Nennius also tells of the building of Vortigern’s tower, a suggestion by his advisers as a fortress that he could hide away in if the Saxons or barbarians were to pursue him. As the builders break ground, the ground continuously reverses their progress by some magic. His court magicians tell him that to fix this he must sacrifice a fatherless boy and sprinkle his blood on the mound. His men find a boy meeting this description in Carmarthen, and bring him and his mother to Vortigern. The boy, named Ambrosius, turns out to be wiser than Vortigern’s magicians, calls them out for lying to the king, and goes on to explain what is really preventing the building of the tower: an underground pool hiding stones that contain sleeping dragons. He tells them how to overcome this, thus establishing himself as a superior intellect to those currently advising the king. I didn’t realize this until after finishing the book, but this is the first legend of Merlin, another name for Ambrosius.
The growing Saxon power is later met by the conquests of King Arthur, although here he is merely Arthur, not referred to as a king. This is where most of Historia Brittonum’s claim to fame rests, on its early mentions of Arthur and his repeated victories over the Saxons. His twelve battles with the Saxons are laid out, and his skill for spilling Saxon blood (940 killed by his hand in the battle of Badon Hill) makes him a legend. He is portrayed as a Christian warrior who conquers the heathens, and whose reverence for the cross, his fasting, his praying, and his carrying of images of the Virgin Mary keep him venerated as a hero. He is almost a symbol of God’s wrath against the Saxon hordes. This short version of the mythical Arthur’s exploits is the reason I sought out and read this book. It’s really a fascinating history even without this segment, but its place in Arthurian lore may be more significant than its place in British history.
The tale of Arthur is over almost as soon as it begins. The book goes on to tell many other small stories and to share some important genealogies of kings across the lands of Bernicia, Kent, East-Anglia, the Mercians, and the Deiri. But somehow this small section of now obscure history, as well as the Merlin episode, both obviously fable but spoken of in reverence and admiration, inspired hundreds of years of myth-making and creative storytelling around Europe, coalescing into a body of lore that may now be the best known in the world. It’s unclear if there are other, earlier references to the legend of Arthur, besides the single line in the Welsh poem Y Gododdin two centuries earlier, which may not even be referring to the same person. As far as scholars know, Nennius’s history is the first time any shred of a legend of Arthur appeared in writing. Or it is at least the earliest we possess.
In all, this short read is worth the time, even for those uninterested in Arthurian legend. It’s a solid piece of history blended into myth, and was a source for important histories that were later written of the region. For those fascinated by the Middle Ages it fulfills an important part of the study.