Contributions are always welcome. Feel free to add anything that might be relevant to Arthurian Studies. Feel free to be more or less cheeky than I have been.
- 55 and 54 BCE: Caesar's Invasions of Britain
- On or near Nisan 15th, between 26 and 36 CE - Crucifixion of Jesus of Nazareth
by that coward Robert Ford
2nd Century CEEdit
3rd Century CEEdit
4th Century CEEdit
5th Century CEEdit
This era is most commonly pointed to, and thought to be by scholars , the lifetime of Arthur if he ever existed. This is the era of the British Isles independence from a crumbling Roman empire, and the subsequent onslaught of invasions by the Picts, Scots, Angles, and Saxons . The abandonment of Roman support left the remains of their armies and the peasantry to gather into small warlord alliances to fend for themselves, afterthrowing off completely the administration Rome had placed them under. Laycock (Britannia the Failed State, 2008 ) has investigated this process of fragmentation and emphasised elements of continuity from the British tribes in the pre-Roman and Roman periods to the kingdoms that formed in the post-Roman period. A perfect place for a Romano-British leader to come into fame and legend for the surprise success of fending off the barbarians.
6th Century CEEdit
- Roman Empire has collapsed and Europe splits into small Germanic kingdoms squabbling for power.
- 12 Battles of Arthur are reported to have taken place by Nennius in Historia Brittonum in the 9th century CE .
- British Isles begin to be (peacefully) invaded and settled by the Saxons alongside the Celts for protection against other invaders.
- Arthur is recorded to have lived and died throughout the century. 
Fletcher, Richard (1989). Who's Who in Roman Britain and Anglo-Saxon England. Shepheard-Walwyn. p. 112.
Britannia Staff Article, "Arthurian Timeline," http://www.britannia.com/history/arthur/timearth.html, 2007
7th Century CEEdit
· Y Gododdin by Aneirin is composed in Old Welsh. A series of 99 elegies about men who fell in the Battle of Catraeth in the northern kingdom, which may be the earliest recorded text with mentions of Arthur. The poem indirectly mentions Arthur after glorifying one of the warriors:
He fed black ravens on the rampart of a fortress Though he was no Arthur Among the powerful ones in battle
In the front rank, Gwawrddur was a palisade
The battle in the poem is debated to have occurred in the early-mid 6th century, keeping Arthur in the post-Romano-British period.
 Charles-Edwards 1991, p. 15; Sims-Williams 1991. Y Gododdin cannot be dated precisely: it describes 6th-century events and contains 9th- or 10th- century spelling, but the surviving copy is 13th-century.
 Jackson, Kenneth H. 1969. The Gododdin: The Oldest Scottish poem. Edinburgh: Edinburgh University Press. ISBN 0-85224-049-X  Jarman, A. O. H. (ed.) 1988. Y Gododdin. Britain's Oldest Heroic Poem. The Welsh Classics vol. 3. Gomer. ISBN 0-86383-354-3
 Ford, David N. "References to a Real King Arthur." Britannia: British History and Travel. Britannia, LLC, 2007. Web. 06 May 2011. <http://www.britannia.com/history/arthur/karef.html>.
 Jarman, pg. 64
 Turner, Sharon. 1803. A vindication of the genuiness of the ancient British poems of Aneurin, Taliesyn, Llywarch Hen and Merddin, with specimens of the poems. E. Williams.
 Koch, John T. 1997. "The Gododdin of Aneurin: text and context from Dark-Age North Britain." Cardiff: University of Wales Press. ISBN 0-7083-1374-4
8th Century CEEdit
The only mention of Arthurian history in the 8th century is The Doctor's trip to Arthur's World , where he is mistaken for the wizard Merlin and helps Arthur defeat Mordred and Morgaine . The real Merlin, a future incarnation of the Doctor, then takes takes Arthurs body and Exalibur in a dimension-hoping space ship to bury them at the bottom of Lake Vortigern near Cadbury.
9th Century CEEdit
10th Century CEEdit
The 10th century began the height of Arthur's medieval popularity. There were two texts that contributed to this sudden rise in fame, the Annales Cambriea and the Preiddeu Annwfn. These two texts both originated in Wales, both circulating throughout the 900s and claiming to come from source material that is lost to the modern world.Edit
The largest contributor to that by far is the Annales Cambriae , which compiled chronicles of Wales, Ireland, Cornwall, England, Scotland, and other surrounding areas. The Annales contains two stories of Arthur, one of which involves Mordred (Medraut), and another involving Merlin (Myrddin). The debate rages on still whether this is proof that Arthur was a real person at some point in history or not. Historians opposed to this theory say that the insertion of those stories or those names could have been arbitrarily placed in the Annales towards to the end of the century when the legends were extremely popular. Edit
The second tells of Arthur's fatal battle with Mordred in Strife of Camlann. The Annales Cambriea is the first text to record this battle where Arthur and Mordred perish and is mostly believed to be legendary. The sight and year of the battle is not certain, and other later accounts are variations of the Arthur versus Mordred conflict. Edit
Merlin's descent into madness after the Battle of Arfderydd concludes the Arthurian stories. The historical account gives no mention of Arthur, but the bard Myrddin is reported to have fled into the forest and gone mad after watching his king Gwenddoleu ap Ceidio die in battle before him. Many scholars conclude this is the basis for Merlin’s character in the myth. Edit
 Green, Thomas (2007). Concepts of Arthur. Stroud, Gloucestershire: Tempus, pg. 26Edit
 Ashe, Geoffrey, From Caesar to Arthur pp.295-8Edit
 R. Ernest Dupuy and Trevor N. Dupuy, The Harper Encyclopedia of Military History From 3500 B.C. to the Present, Fourth Edition (New York: HarperCollins Publishers, 1993), 193.Edit
 C. Warren Hollister, "The Making of England to 1399", Eighth Edition (New York: Houghton Mifflin Company, 2001), 31.Edit
 Green pg. 31Edit
 Green pg. 28Edit
 Tolstoy, Nikolai (1985) The Quest for Merlin.Edit
 Lacy, Norris J. (1991). "The Spoils of Annwfn (Preiddeu Annwfn)." In Lacy, Norris J., The New Arthurian Encyclopedia, p. 428. New York: Garland.Edit
 Loomis, Roger Sherman (1991). The Grail: From Celtic Myth to Christian Symbol. Princeton.
11th Century CEEdit
- Mabinogion written. Maybe.
- 1019 - Legenda Sancti Goeznovii is written, providing one of the earliest non-fantastical tales about Arthur and his conquests. This account goes back to the Vortigern legend of Historia Brittonum when the Saxons come settle in the land by invitation of the king for protection against other invaders but instead oppress the Britons themselves. Arthur rises up against their tyrrany to become the new king of Britain and bests all other invaders and territories around Gaul until he dies.
- 1096-1099 - First Crusade. Jerusalem Regained.
12th Century CEEdit
- 1136? - Geoffrey of Monmouth writes Historia Regum Britannae.
- 1145-1149 - Second Crusade - Jerusalem Lost.
- 1150-1155 - Wace writes the Roman de Brut.
- 1170 - Wolfram von Eschenbach is born, immediately kicks ass.
- 1189-1192 - Third Crusade Firanj get a small foothold in the Holy Land again. Richard Coeur de Lyon finds a new hobby: cannibalism. Or so they say.
- (late in the century) - Chrétien de Troyes (Cliges, Lancelot, Yvain, Erec & Enid, Percival) and Marie de France (Lai of Lanval) flourish.
13th Century CEEdit
- (early in the century) - Robert de Boron (Joseph of Arimathea) flourishes.
- (First quarter of the century) Wolfram composes his Parzival. Everything gets way cooler.
- 1215 - The game-changing Fourth Council of the Lateran happens. Confession reinforced! Marriage redefined (and brought under closer church control)! Joachim of Flore is a heretic! Jews and Moslems have to wear special garments!
14th Century CEEdit
- 1343? - Geoffrey Chaucer born.
- 1350 - The White Book of Rhydderch (Llyfr Gwyn Rhydderch), containing part of the Mabinogion, written.
- ~1382-1410 - The Red Book of Hergest (Llyfr Coch Hergest), containing part of the Mabinogion, written.
- (late in the century) - Cotton Nero A.x (Sir Gawain and the Green Knight) written.
15th Century CEEdit
- 22 August 1485 - Battle of Bosworth Field. Richard III agrees to disastrous kingdom/horse swap. Henry, Early of Richmond, invents the Tudors, gets deal with HBO. Renaissance begins at 4:17 PM.