See also


1. Coel I KING OF BRITIAN, son of Marius of Siluria "Meurig" KING OF BRITAIN ( -c. 125), married Daughter PRINCESS OF BRITAIN (CATUVELLAUNI).




Coilus was a legendary king of the Britons during the time of the Roman occupation of Britain as accounted by Geoffrey of Monmouth. He was the son of King Marius and ruled following his father's death.

Of all native kings of Britain, Coilus was the most Romanized. He was brought up in Rome and favored the company of Romans in Britain. Throughout his entire reign, he paid Rome its tribute without question. In Britain, he allowed the nobles peace and granted them large gifts. He was succeeded by his only son, St. Lucius.


Daughter PRINCESS OF BRITAIN (CATUVELLAUNI) and Coel I KING OF BRITIAN had the following children:


Lucius KING OF BRITAIN (110-180). Lucius was born in 0110. He died in 0180.

Athildis QUEEN OF THE FRANKS (c. 90- ). Athildis was born circa 0090.

Second Generation

2. Marius of Siluria "Meurig" KING OF BRITAIN, son of Gweirydd of Siluria KING OF BRITAIN and Genvissa of Britain QUEEN OF BRITAIN, was born. He died circa 0125.


Marius (Welsh: Meurig) was a legendary king of the Britons during the time of the Roman occupation of Britain as accounted by Geoffrey of Monmouth. He was the son of King Arvirargus and ruled following his father's death.

Known as one of the wiser kings of Britain, he ruled in the time when the Picts first came to Britain. It appears that a fleet of ships under the leadership of Sodric came from Scythia and landed in Albany. Once there, they began to destroy the lands and Marius was forced to react. Following numerous battles, Marius killed Sodric and set up a stone there to remember that triumph. In addition, that land became known as Westmorland after him. In respect for the people he defeated, he gave them a small portion of Albany called Caithness to live in. Marius refused, however, to give them Briton wives to marry so the Picts fled to Ireland and took wives there.

In regard to Rome, Marius established close ties and good diplomacy through tribute and respect of the Roman citizens in Britain. He followed the laws of his ancestors and ruled the island justly. When he died, he was succeeded by his son, Coilus.


Marius of Siluria "Meurig" KING OF BRITAIN had the following children:




Third Generation

3. Gweirydd of Siluria KING OF BRITAIN (also known as Arvigarus), son of Cymbeline KING OF THE CATUVELLAUNI, married Genvissa of Britain QUEEN OF BRITAIN.


(Arviragus) (Caractacus??). Arvirargus was a legendary king of the Britons as accounted by Geoffrey of Monmouth. He was the son of King Cymbeline and succeeded his brother, King Guiderius fighting against the Romans under the command of Emperor Claudius. It is very possible, considering the similarities, that Arvirargus is the same person as Caratacus, also listed as a son of Cymbeline.

Following his older brother's death, Arvirargus took the armour of Guiderius and led the army of the Britons against the Romans. When he learned that Claudius and his commander, Hamo, had fled into the woods, Arvirargus followed him until they reached the coast. The Britons killed Hamo as he was trying to flee onto a ship and the place was named Southampton since that day. Claudius was able to reassemble his troops elsewhere and he besieged Portchester until it fell to his forces.

Following Hamo's death, Arvirargus sought refuge at Winchester but Claudius followed him there with his army. Following a siege, the Britons fled the city and attacked the Romans but Claudius halted the attack in exchange for a treaty. In exchange for peace and tribute with Rome, Claudius offered Arvirargus his own daughter in marriage. They accepted each other's terms and Arvirargus aided Claudius in subduing the Orkneys and other northern lands.

In the following spring, Arvirargus wed Claudius's daughter, Genvissa, and named the city of Gloucester after her. Following the wedding, Claudius left Britain in the control of Arvirargus. In the years following Claudius' departure, Arvirargus rebuilt the cities that had been ruined and became feared by his neighbours. This caused him to halt his tribute to Rome forcing Claudius to send Vespasian with an army to Britain. As Vespasian prepared to land, such a large Briton force stood ready that he fled to another port, Totnes, where he set up camp.

Once a base was established, he marched to Exeter and besieged the city. Arvirargus met him in battle there and the fight was stalemated. The following morning, Queen Genvissa mediated peace between the two foes. Vespasian returned to Rome and Arvirargus ruled the country peacefully for some years. When he finally died, he was buried in Gloucester, the city he had built with Claudius. He was succeeded by his son, Marius.

According to Hardynge's Chronicle (AD 1378-1465), Arviragus was asked to meet with Joseph of Arimathea and company upon their arrival at Glastonbury. Moreover, according to they Domesday Survey Arviragus is recorded as having granted Joseph and his followers (as Judean refugees - "Quidam advanae-Culdich" which means roughly "certain Culdee strangers") twelve hides of land tax free, in Ynis-witrin or the Isle of Avalon. The Domesday Book also indicates that;

The Domus Dei, in the great monastery of Glastonbury, called the Secret of the Lord, this Glasonbury Church possesses, in its own villa XII hides of land which have never paid tax

William Malmsebury, wrote in 1126 C.E. that;

In the year of our Lord, 63, twelve holy missionaries, with Joseph of Arimathea (who had buried the Lord) at their head, came over to Britain, preaching the Incarnation of Jesus Christ. The king (Arviragus) of the country and his subjects refused initially to become proselytes to his teaching, but in consideration that they had come a long journey, and being pleased with their soberness of life and unexceptional behaviour, the king, at their petition, gave them for their habitation a certain island bordering on his region, covered with trees and bramble bushes and surrounded by marshes, called Ynis-wytrin.

Though Arviragus did not initially become a Christian upon meeting Joseph of Arimathea, there is evidence that he may have later been converted to Joseph's faith as his historical counterpart Caratacus, is described as a "barbarian Christian" by Dio Cassius (Epitome of Book LXI, 33:3c [1]).


4. Genvissa of Britain QUEEN OF BRITAIN was the daughter of Tiberius Claudius Nero EMPEROR OF ROME and Julia Agrippina Minor of Rome.


This link has as the source for its claims the writings of Geoffrey of Monmouth. Earlier sources do not mention her.

The citing is as follows:

He (Claudius) therefore proposed peace to him (Arvirargus), promising to give him his own daughter, if only he would recognize that the kingdom of Britain was under the sway of Rome. His nobles persuaded Arvirargus to abandon his plans for battle and to accept the proposals of Claudius. Their argument was that it could be no disgrace for him to submit to the Romans, since they were the acknowledged overlords of the whole world. Arvirargus was swayed by these arguments and by others of a similar nature. He accepted their advice and submitted to Claudius. Claudius soon sent to Rome for his daughter. With the help of Arvirargus he subdued the Orkneys and the other islands in that neighbourhood.

At the end of that winter the messengers returned with Claudius' daughter and handed her over to her father. The girl's name was Genvissa (= Genuissa). Her beauty was such that everyone who saw her was filled with admiration. Once she had been united with him in lawful marriage, she inflamed the King with such burning passion that he preferred her company to anything else in the world. As a result of this Arvirargus made up his mind to give some special mark of distinction to the place where he had married her. He suggested to Claudius that the two of them should found there a city which should perpetuate in times to come the memory of so happy a marriage. Claudius agreed and ordered a town to be built which should be called Kaerglou or Gloucester. Down to our own day it retains its site on the bank of the Severn, between Wales and Loegria. Some, however, say that it took its name from Duke Gloius, whom Claudius fathered in that city and to whom he granted control of the duchy of the Welsh after Arvirargus.


Gweirydd of Siluria KING OF BRITAIN and Genvissa of Britain QUEEN OF BRITAIN had the following children:



Marius of Siluria "Meurig" KING OF BRITAIN ( -c. 125)