 As told in "The Dream of Emperor Maximus", Maximus married a Briton, and their supposed children are given in genealogies as the ancestors of kings.Tracing ancestries back further, Roman emperors are listed as the sons of earlier Roman emperors, thus incorporating many famous Romans (e.g., Constantine the Great) into the royal genealogies.The kings of medieval Gwynedd trace their origins to the northern British kingdom of Manaw Gododdin (located in modern Scotland), and they also claim a connection to Roman authority in their genealogies ("Eternus son of Paternus son of Tacitus").