Cumbrian Cymric

The land between the Humber River and Hadrian's Wall is called Cumbria. Parted in two by the Perinnes, the western part have long been lost to untamed wilderness, while the eastern part remained civilized by Roman hand. Cumbria was originally settled of the region by descendants of the Trojans who had arrived under Brutus, the grandson of Aeneas of Troy. They first settled in the south and moved northwards along the rich river valleys. In the time of Ebraucus, the sixth king of Logres, the fort of Kaerebrauc was established in the lower Ouse Vale. Ebracus had 20 sons, many of whom were the ancestors of the powerful families in the Brigantes tribe, and also among their neighbors, the Parisii. They sang the praises of many an old god, chief among them Brigantia, their Mother and Cocidius, the great huntsman. But, as with most, this would not last. While the Cumbrians were a part of the many kings and queens that followed Brutus, their strongest hour did not come until invaders came across the sea.

Conquest

In the barbarian days the Brigantes tribe was the most powerful in Britain. When Caesar came the Brigantes helped repel him, and when the emperors came again they fought valiantly but, through treachery, were finally conquered.
To suppress the independent-minded tribe the Roman governor built a permanent legionary fortress at Caerebrauc, and then made the city into their regional capital, which they called Eburacum. Later, when Britain was split into two provinces, Eburacum became the capital city of Britannia Inferior. It grew large, prosperous and powerful.

Roman Rule and the Rise of Coel the Old
The Romans ruled, and the Brigantes endured. The people were not shipped off and replaced, but simply altered their lives to Roman ways as subjects and members of the empire. They adopted many of the Roman ways, and their leaders became rich and senatorial leaders of their land. But they also kept their tribal identity and many of their day-to-day old ways were unchanged, especially among the populous commoners.
As the years passed, Rome grew more and more distant, and after the event with Mascen Wledig, Rome began appointing members of the British tribes as local defenders of the realm. One such man was Coelestius, who was named Dux of Eburacum, and in the years that followed, managed to forge a united North
Coelestius is remembered now with his Cymric name as King Coel Hen, or Coel the Old. His wife was named Stradwawl, and their daughter Gwawl married the young King Cunedda of the Votadini, while their other daughter Arianwen would wed a Breton Prince named Constantin. His sons were at the front of the battle against Saxons, Picts and Irish and his descendants include the King of Malahaut and many other lords of the North and the Pennines.
And thus it occurred that when the Empire abandoned Britain in 410, wise Coel Hen placed his steady hand on the helm and banded together a strong alliance in the middle of a time of chaos and strife, with both Caledonians and Cumbrians respecting his rule.
In 415, the senators of the island met and established the Supreme Collegium to rule them. Four seats among them were given to Coel Hen, for his many loyal subjects. This body, preserving the republican traditions of ancient Rome, would elect a High King, and Coel Hen stood besides the choice to elect Constantin, second son of Mascen Wledig, as the new High King of Britannia.
There followed peace.
And when Coel Hen died, his son and sons-in-law split his realm between them, with Ceneu taking Brigantia for himself. In the years that followed however, while Brigantia had faith in the High King Constantine, the feuding that arose with King Constantine's death was enough to turn King Ceneu against the Usurper Vortigern, who had by all sense killed Ceneu's nephews. War came, and with Vortigern's vile use of Saxon mercenaries, Brigantia was torn asunder into several kingdoms.

Major organizations

Mor ap Ceneu, King after his father, was given the realm of Malahaut, a shadow of the former land of Coel Hen's glory. It's seat was Eburacum and claimed the old heartlands of Brigantia, from moors in the east and the Humber in the south, to the dales in the Pennines foothills of north and west.
Their greatest ally dwells in the north, the Duchy of Cambernet, seperated by the Tynedale Pass and too far away to be ruled from Eburacum, the Duke over the Cambernet Plain is ever fiercely loyal to Coel Hen's kin and keep the watch to the north, as the last caretakers of the old wall.
From the heights of Airedale, the valley along the River Don was formed the kingdom of Roestoc, filled with strong adherants to the old faith, a area that even not the Romans had convinced to follow Christ. Here, Masgwid the Lame was made King, who turned on King Ceneu when the old King of the Brigantes lost to Vortigern's Saxon forces.
Around the great Sherwood, the kingdom of Bedegraine was made for yet another turncloak who followed Vortigern. In the years that followed, Bedegraine fought great battles with the Coritani tribe of Linden.
In the marshes of Maris, a strange sort of Cumbrians dwelt, lead by another noble who turned on Coel Hen's lineage in exchange for a crown of their own.
And while the Parisi shortly regained their independence, the fading of their royal line and the service of the Saxons meant that the coastal lands of Deira fell under Saxon rule, as Eosa, son of Horsa, forged a crown here.
To make matters worse, the coastal lands of Malahaut was later given to the son of Hengist, Octa, who named himself King of Nohaut.
Beyond the Peninnes, no words was heard, and many thought the eastern lands of Cumbria to be lost forever, yet many recall the tales of the mountainous kingdom of Listenesse, yet it is supposed to be ruled by the heirs of Coel Hen.
The lands of Amans and Pase are strange cases, not completely Cumbrian nor Cambrian. The King of Amans rules the highlands of Black and White Peaks, and the Count of Pase commands a small city and guard one of the few passes across the southern Pennines.