Y Gododdin in the context of "Gododdin"

King Arthur (Welsh: Brenin Arthur; Cornish: Arthur Gernow; Breton: Roue Arzhur; French: Roi Arthur) was a legendary king of Britain. He is a folk hero and a central figure in the medieval literary tradition known as the Matter of Britain.

In Welsh sources, Arthur is portrayed as a leader of the post-Roman Britons in battles against the Anglo-Saxons in the late-5th and early-6th centuries. He first appears in two early medieval historical sources, the Annales Cambriae and the Historia Brittonum, but these date to 300 years after he is supposed to have lived, and most historians who study the period do not consider him a historical figure. His name also occurs in early Welsh poetic sources, such as Y Gododdin. The character developed through Welsh mythology, appearing either as a great warrior defending Britain from human and supernatural enemies or as a magical figure of folklore, and was sometimes associated with the Welsh otherworld Annwn.

The Battle of Catraeth was a legendary battle fought around AD 600 between a force raised by the Gododdin, a Brythonic people of the Hen Ogledd or "Old North" of Britain, and the Angles of Bernicia and Deira. It was evidently an assault by the Gododdin party on the Angle stronghold of Catraeth, perhaps Catterick, North Yorkshire. The Gododdin force was said to have consisted of warriors from all over the Hen Ogledd, and even some from as far afield as Gwynedd in North Wales and Pictland. The battle was disastrous for the Britons, who were nearly all killed. The slain warriors were commemorated in the important early poem Y Gododdin, attributed to Aneirin.

Eidyn was the region around modern Edinburgh in sub-Roman and early medieval Britain, approximately during the 5th–7th centuries. It centred on the stronghold of Din Eidyn, thought to have been at Castle Rock, now the site of Edinburgh Castle, and apparently included much of the area below the Firth of Forth. It was the most important district of the Brittonic kingdom of Gododdin, and a significant power in the Hen Ogledd, or Old North, the Brittonic-speaking area of what is now southern Scotland and northern England.

The site of Din Eidyn has been nearly continuously occupied since the Bronze Age, serving as a stronghold of the Votadini during the Roman era and later the principal centre of their successors, the Gododdin kingdom. Eidyn's importance to the Hen Ogledd is reflected in the medieval poem Y Gododdin, which concerns a war band that gathered there for a raid around AD 600. After years of decline, Eidyn was conquered by the Angles in 638.

Manaw Gododdin was the narrow coastal region on the south side of the Firth of Forth, part of the Brythonic-speaking Kingdom of Gododdin in the post-Roman Era. It is notable as the homeland of Cunedda prior to his conquest of North Wales, and as the homeland of the heroic warriors in the literary epic Y Gododdin. Pressed by the Picts expanding southward and the Northumbrians expanding northward, it was permanently destroyed in the 7th century and its territory absorbed into the then-ascendant Kingdom of Northumbria.

The lands both south and north of the Firth of Forth were known as 'Manaw', but from the post-Roman Era forward, only the southern side is referred to as Manaw Gododdin, the Manaw associated with the people of Gododdin. Manaw Gododdin was adjacent to – and possibly included in – Eidyn, the region surrounding modern Edinburgh.