Magnus Maximus was Roman emperor of the Western Roman Empire from 383 to 388. He usurped the throne from emperor Gratian.
Geoffrey of Monmouth was a cleric from Monmouth, Wales, and one of the major figures in the development of British historiography and the popularity of tales of King Arthur. He is best known for his chronicle The History of the Kings of Britain which was widely popular in its day, being translated into other languages from its original Latin. It was given historical credence well into the 16th century, but is now considered historically unreliable.
Brutus, also called Brute of Troy, is a legendary descendant of the Trojan hero Aeneas, known in medieval British legend as the eponymous founder and first king of Britain. This legend first appears in the Historia Brittonum, an anonymous 9th-century historical compilation to which commentary was added by Nennius, but is best known from the account given by the 12th-century chronicler Geoffrey of Monmouth in his Historia Regum Britanniae.
Corineus, in medieval British legend, was a prodigious warrior, a fighter of giants, and the eponymous founder of Cornwall.
Saint Ursula is a legendary Romano-British Christian saint who died on 21 October 383 or 385. Her feast day in the pre-1970 Calendarium Romanum Generale is 21 October. There is little information about her and the anonymous group of holy virgins who accompanied and, on an uncertain date, were killed along with her at Cologne. They remain in the Roman Martyrology, although their commemoration does not appear in the simplified General Roman Calendar of the 1970 Missale Romanum.
Tasciovanus was a historical king of the Catuvellauni tribe before the Roman conquest of Britain.
Cassivellaunus was a historical British military leader who led the defence against Julius Caesar's second expedition to Britain in 54 BC. He led an alliance of tribes against Roman forces, but eventually surrendered after his location was revealed to Julius Caesar by defeated Britons.
Ingenius is a legendary king of the Britons as recounted by Geoffrey of Monmouth's pseudohistorical work Historia Regum Britanniae, written c. 1138 CE. Ingenius was the fourth son of King Morvidus and the brother of Gorbonianus, Archgallo, Elidurus, and Peredurus.
Historia regum Britanniae, originally called De gestis Britonum, is a pseudohistorical account of British history, written around 1136 by Geoffrey of Monmouth. It chronicles the lives of the kings of the Britons over the course of two thousand years, beginning with the Trojans founding the British nation and continuing until the Anglo-Saxons assumed control of much of Britain around the 7th century. It is one of the central pieces of the Matter of Britain.
Eudaf Hen is a figure of Welsh tradition. He is remembered as a King of the Britons and the father of Elen Luyddog and Conan Meriadoc in sources such as the Welsh prose tale The Dream of Macsen Wledig and Geoffrey of Monmouth's Latin chronicle Historia Regum Britanniae. He also figures into Welsh genealogies. Geoffrey of Monmouth calls him Octavius, a corruption and faux-Latinization of Old Welsh/Breton Outham. According to the medieval Welsh genealogy from Mostyn MS. 117, Eudaf was a direct ancestor of King Arthur.
Caradocus, according to Geoffrey of Monmouth's Historia regum Britanniae, a pseudohistorical account of the kings of the Britons, was the duke of Cornwall under the reign of Octavius, who became king of Cornwall and died during the Emperor Magnus Maximus' reign.
Gracianus Municeps was a legendary King of the Britons, according to Geoffrey of Monmouth's Historia regum Britanniae, a largely fictional account of British history. "Municeps" translates to "freedman", meaning this individual was Gracianus the freedman. After the death of Roman Emperor Magnus Maximus, Gracianus seized the throne of Britain upon receiving word of Maximus's demise, by whose orders he had been sent to defend the attacked island while Maximus was campaigning on the continent.
Vortimer, also known as Saint Vortimer, is a figure in British tradition, a son of the 5th-century Britonnic ruler Vortigern. He is remembered for his fierce opposition to his father's Saxon allies. In Geoffrey of Monmouth's Historia Regum Britanniae, he overthrows his father and reigns as King of Britain for a brief period before his death restores Vortigern to power.
Conan Meriadoc is a legendary Celtic leader credited with founding Brittany. Versions of his story circulated in both Brittany and Great Britain from at least the early 12th century, and supplanted earlier legends of Brittany's foundation. His story is known in two major versions, which appear in the Welsh text known as The Dream of Macsen Wledig, and in Geoffrey of Monmouth's Historia Regum Britanniae. Both texts associate him with Magnus Maximus, a Roman usurper against the Valentinianic dynasty who was widely regarded as having deprived Britain of its defences when he took its legions to claim the imperial throne. Conan's cousin or sister, Saint Elen, is said to have been Macsen Wledic's wife.
Cador was a legendary Duke of Cornwall, known chiefly through Geoffrey of Monmouth's pseudohistorical Historia Regum Britanniae and previous manuscript sources such as the Life of Carantoc.
Innogen is a character in the Historia Regum Britanniae and subsequent medieval British pseudo-history. She was said to have been a Greek princess, the daughter of King Pandrasus, and to have become Britain's first Queen consort as the wife of Brutus of Troy, the purported first king of Britain who was said to have lived around the 12th century BC. Her sons Locrinus, Camber, and Albanactus went on to rule Loegria, Cambria, and Alba respectively.
Mandubracius or Mandubratius was a king of the Trinovantes of south-eastern Britain in the 1st century BC.
Llefelys is a character in Welsh mythology appearing in the medieval Welsh tale Cyfranc Lludd a Llefelys. In the tale, Llefelys is king of Gaul while his brother Lludd is king of Britain. The tale appears in the Red Book of Hergest and the White Book of Rhydderch, the source texts for the Mabinogion, and embedded into various versions of the Brut y Brenhinedd, the Welsh adaptation of Geoffrey of Monmouth's Historia Regum Britanniae.
Pridwen was, according to the 12th-century writer Geoffrey of Monmouth, King Arthur's shield; it was adorned with an image of the Virgin Mary. Geoffrey's description of it draws on earlier Welsh traditions found in Preiddeu Annwfn, Culhwch and Olwen, and the Historia Brittonum. The shield is also named and described by Wace, Layamon, Roger of Wendover and Robert of Gloucester among other medieval writers, and it directly inspired the description of Sir Gawain's shield in Sir Gawain and the Green Knight.
