Maddan was a legendary king of the Britons as accounted by

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 ...

. He came to power in 1100BC. He was the son of King

Locrinus Locrinus was a legendary king of the Britons (historic), Britons, as recounted by the 12th-century chronicler Geoffrey of Monmouth in his ''Historia Regum Britanniae''. He came to power in 1125BC. According to Geoffrey, Locrinus was the oldest so ...

and Queen Gwendolen,Sacred Texts website
''Histories of the Kings of Britain (Book II)'', by Geoffry of Monmouth, tr. by Sebastian Evans (1904) who both ruled

Britain Britain most often refers to: * Great Britain, a large island comprising the countries of England, Scotland and Wales * The United Kingdom of Great Britain and Northern Ireland, a sovereign state in Europe comprising Great Britain and the north-eas ...

separately. He was born during the reign of Locrinus but soon after, his grandfather Corineus of

Cornwall Cornwall (; or ) is a Ceremonial counties of England, ceremonial county in South West England. It is also one of the Celtic nations and the homeland of the Cornish people. The county is bordered by the Atlantic Ocean to the north and west, ...

died and his mother defeated Locrinus in battle. His mother reigned for the fifteen years of Maddan's adolescence then she abdicated in his favor. Soon after taking the throne, he married and became the father of Mempricius and Malin. For forty years he reigned peacefully until his death when civil war broke out between his sons.

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{{Geoffrey of Monmouth Legendary British kings