Rederchius was a legendary king of the

Britons British people or Britons, also known colloquially as Brits, are the citizens of the United Kingdom, the British Overseas Territories, and the Crown dependencies.: British nationality law governs modern British citizenship and nationality, w ...

according to

Geoffrey of Monmouth 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 ...

's ''

History of the Kings of Britain (''The History of the Kings of Britain''), originally called (''On the Deeds of the Britons''), is a fictitious account of British history, written around 1136 by Geoffrey of Monmouth. It chronicles the lives of the kings of the Britons ove ...

'' (1136). He was also known as Rhydderch and came to power in 143BC. He was preceded by Redon and succeeded by Samuil Penissel. ''History of the Kings of Britain'' 3.19 at Wikisource. Lewis Thorpe's translation for Penguin Classics (p. 105) gives two kings following him, Samuil followed by Penessil.

References

{{Geoffrey of Monmouth Legendary British kings