The story begins with Cerdic's birth in 451 CE, ending shortly before his death in 534 CE. Britain now consists of small states battling each other while also fighting off Danes, Irish, Picts, Jutes, Angles and Saxons. Cerdic (whose Roman name is Coroticus) is the youngest son of Eleutherus, King of the Regni, a territory in southern England roughly equivalent to modern East and West Sussex. Although raised as a Roman, his paternal grandfather was closely related to a Germanic ruler given land in Southern Britain around 370 CE in return for military service. This was common practice in the late Roman Empire and means he is at home in both cultures.