The History of the Britons (Historia Brittonum) is an Old English chronicle treatise written by an unknown author known as Nennius, whose activity dates to 796. In his book he attempted to collect and describe the history of the British from the earliest times to his own time, giving his own views on the origin and origin of the British. "History of the Britons" is one of the most important sources on the history of Great Britain in the early Middle Ages. The book includes legends, myths and historical facts relating to the Celtic and Anglo-Saxon eras. This treatise is an important source for the study of cultural and political development on the island in the Middle Ages. By reading "History of the British", readers can better understand the important historical events that took place in the territory of modern Great Britain, as well as try to feel the spirit and culture of this country in distant centuries."