Ambrosius Aurelianus was a war leader of the Romano-British who won an important battle against the Anglo-Saxons in the 5th century, according to Gildas. He also appeared independently in the legends of the Britons, beginning with the 9th-century Historia Brittonum. Eventually, he was transformed by Geoffrey of Monmouth into the uncle of King Arthur, the brother of Arthur's father Uther Pendragon, as a ruler who precedes and predeceases them both. He also appears as a young prophet who meets the tyrant Vortigern; in this guise, he was later transformed into the wizard Merlin.
Hengist and Horsa are Germanic brothers said to have led the Angles, Saxons and Jutes in their supposed invasion of Britain in the 5th century. Tradition lists Hengist as the first of the Jutish kings of Kent.
Geoffrey of Monmouth was a Catholic 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.
The Battle of Badon, also known as the Battle of Mons Badonicus, was purportedly fought between Britons and Anglo-Saxons in Post-Roman Britain during the late 5th or early 6th century. It was credited as a major victory for the Britons, stopping the westward encroachment of the Anglo-Saxon kingdoms for a period.
Uther Pendragon (Brittonic), also known as King Uther, was a legendary King of the Britons and father of King Arthur.
Vortigern, also spelled Vortiger, Vortigan, Voertigern and Vortigen, was a 5th-century warlord in Britain, known perhaps as a king of the Britons or at least connoted as such in the writings of Bede and Gildas. His existence is contested by scholars and information about him is obscure.
The History of the Britons is a purported history of early Britain written around 828 that survives in numerous recensions from after the 11th century. The Historia Brittonum is commonly attributed to Nennius, as some recensions have a preface written in that name. Some experts have dismissed the Nennian preface as a late forgery and argued that the work was actually an anonymous compilation.
Nennius – or Nemnius or Nemnivus – was a Welsh monk of the 9th century. He has traditionally been attributed with the authorship of the Historia Brittonum, based on the prologue affixed to that work. This attribution is widely considered a secondary (10th-century) tradition.
Dinas Emrys is a rocky and wooded hillock near Beddgelert in Gwynedd, north-west Wales. Rising some 76 m (250 ft) above the floor of the Glaslyn river valley, it overlooks the southern end of Llyn Dinas in Snowdonia.
Brutus, also called Brute of Troy, is a fictional character who is depicted as 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.
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.
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.
Octa was an Anglo-Saxon King of Kent during the 6th century. Sources disagree on his relationship to the other kings in his line; he may have been the son of Hengist or Oisc, and may have been the father of Oisc or Eormenric. The dates of his reign are unclear, but he may have ruled from 512 to 534 or from 516 to 540. Despite his shadowy recorded history Octa made an impact on the Britons, who describe his deeds in several sources.
Catigern is a figure of Welsh tradition, said to be a son of Vortigern, the tyrannical King of the Britons, and the brother of Vortimer. A figure of this name also appears in the Welsh genealogies, though he is given different parentage. Catigern is nearly exclusively known for a tradition in which he fell in battle with the Saxons.
Eldol was Consul or Count of Gloucester in Geoffrey of Monmouth's circa 1136 work Historia Regum Britanniae. In this pseudohistory he was the sole British leader to escape from the massacre of Salisbury, to which Hengist had invited all of the British Leaders to a peace treaty. When all of the leaders were there, about 460 in number, Hengest ordered his men to draw their long knives and kill every leader. Vortigern was spared, but every other ruler was slain, save Eldol, who grabbed a stick up off the ground and killed 70 men in his escape.
Rowena in the Matter of Britain was the daughter of the purported Anglo-Saxon chief Hengist and wife of Vortigern, "King of the Britons". Presented as a beautiful femme fatale, she won her people the Kingdom of Kent through her treacherous seduction of Vortigern. Contemporary sources are nearly non-existent, so it is impossible to know if she actually existed.
Lludd and Llefelys is a Middle Welsh prose tale written down in the 12th or 13th century; it was included in the Mabinogion by Lady Charlotte Guest in the 19th century. It tells of the Welsh hero Lludd Llaw Eraint, best known as King Lud son of Heli in Geoffrey of Monmouth's Historia Regum Britanniae, and his brother Llefelys.
A number of medieval chronicles of the history of Wales survive, notably the 9th century Historia Brittonum and the 10th century Annales Cambriae. These early chronicles are written in Latin, while from the 12th century, some are composed in Middle Welsh. The oldest surviving manuscripts of chronicles kept in the National Library of Wales, Aberystwyth date to the 13th century.
The Battle of Guoloph, also known as the Battle of Wallop, took place in the 5th century. Various dates have been put forward: 440 AD by Alfred Anscombe, 437 AD according to John Morris, and 458 by Nikolai Tolstoy. It took place at what is now Nether Wallop, 15 kilometers southeast of Amesbury, in the district of Test Valley, northeastern Hampshire. The battle was an internal conflict between the rival Britonnic forces of Ambrosius Aurelianus and Vortigern (Vitalinus).
