Corineus, in medieval British legend, was a prodigious warrior, a fighter of giants, and the eponym

Eponym

An eponym is the name of a person or thing, whether real or fictitious, after which a particular place, tribe, era, discovery, or other item is named or thought to be named...

ous founder of Cornwall

Cornwall

Cornwall is a unitary authority and ceremonial county of England, within the United Kingdom. It is bordered to the north and west by the Celtic Sea, to the south by the English Channel, and to the east by the county of Devon, over the River Tamar. Cornwall has a population of , and covers an area of...

.

According to Geoffrey of Monmouth

Geoffrey of Monmouth

Geoffrey of Monmouth was a cleric and one of the major figures in the development of British historiography and the popularity of tales of King Arthur...

's History of the Kings of Britain

Historia Regum Britanniae

The Historia Regum Britanniae is a pseudohistorical account of British history, written c. 1136 by Geoffrey of Monmouth. It chronicles the lives of the kings of the Britons in a chronological narrative spanning a time of two thousand years, beginning with the Trojans founding the British nation...

(1136), he led the descendants of the Trojans

Troy

Troy was a city, both factual and legendary, located in northwest Anatolia in what is now Turkey, southeast of the Dardanelles and beside Mount Ida...

 who fled with Antenor

Antenor (mythology)

In Greek mythology, Anthenor was a son of the Dardanian noble Aesyetes by Cleomestra. He is a counselor to Priam during the Trojan War.-History:He was one of the wisest of the Trojan elders and counsellors...

 after the Trojan War

Trojan War

In Greek mythology, the Trojan War was waged against the city of Troy by the Achaeans after Paris of Troy took Helen from her husband Menelaus, the king of Sparta. The war is among the most important events in Greek mythology and was narrated in many works of Greek literature, including the Iliad...

 and settled on the coasts of the Tyrrhenian Sea

Tyrrhenian Sea

The Tyrrhenian Sea is part of the Mediterranean Sea off the western coast of Italy.-Geography:The sea is bounded by Corsica and Sardinia , Tuscany, Lazio, Campania, Basilicata and Calabria and Sicily ....

. After Brutus

Brutus of Troy

Brutus or Brute of Troy is a legendary descendant of the Trojan hero Æneas, known in mediæval British legend as the eponymous founder and first king of Britain...

, a descendant of the Trojan prince Aeneas

Aeneas

Aeneas , in Greco-Roman mythology, was a Trojan hero, the son of the prince Anchises and the goddess Aphrodite. His father was the second cousin of King Priam of Troy, making Aeneas Priam's second cousin, once removed. The journey of Aeneas from Troy , which led to the founding a hamlet south of...

, had been exiled from Italy and liberated the enslaved Trojans in Greece, he encountered Corineus and his people, who joined him in his travels. In Gaul

Gaul

Gaul was a region of Western Europe during the Iron Age and Roman era, encompassing present day France, Luxembourg and Belgium, most of Switzerland, the western part of Northern Italy, as well as the parts of the Netherlands and Germany on the left bank of the Rhine. The Gauls were the speakers of...

, Corineus provoked a war with Goffarius Pictus, king of Aquitania

Gallia Aquitania

Gallia Aquitania was a province of the Roman Empire, bordered by the provinces of Gallia Lugdunensis, Gallia Narbonensis, and Hispania Tarraconensis...

, by hunting in his forests without permission, and killed thousands single-handedly with his battle-axe. After defeating Goffarius, the Trojans crossed to the island of Albion

Albion

Albion is the oldest known name of the island of Great Britain. Today, it is still sometimes used poetically to refer to the island or England in particular. It is also the basis of the Scottish Gaelic name for Scotland, Alba...

, which Brutus renamed Britain after himself. Corineus settled in Cornwall, which was then inhabited by giants. Brutus and his army killed most of them, but their leader, Gogmagog

Gogmagog (folklore)

Gogmagog - also Goemagot, Goemagog or Gogmagoc - was a legendary giant in British folklore. According to the 12th Century Historia Regum Britanniae by Geoffrey of Monmouth, Gogmagog was a giant inhabitant of Albion, and was thrown off a cliff during a wrestling match with Corineus who was a...

, was kept alive for a wrestling match with Corineus. The fight took place near Plymouth

Plymouth

Plymouth is a city and unitary authority area on the coast of Devon, England, about south-west of London. It is built between the mouths of the rivers Plym to the east and Tamar to the west, where they join Plymouth Sound...

, and Corineus killed him by throwing him over a cliff.

Corineus was the first of the Legendary Dukes of Cornwall

Legendary Dukes of Cornwall

"Duke of Cornwall" appears as a title in pseudo-historical authors as Nennius and Geoffrey of Monmouth. The list is extremely patchy, and not every succession was unbroken. Indeed, Geoffrey repeatedly introduces Dukes of Cornwall only to promote them to the Kingship of the Britons and thus put an...

. After Brutus died the rest of Britain was divided between his three sons, Locrinus

Locrinus

Locrinus was a legendary king of the Britons, as recounted by Geoffrey of Monmouth. He was the oldest son of Brutus and a descendant of the Trojans through Aeneas. Following Brutus's death, Britain was divided amongst the three sons, with Locrinus receiving the portion roughly equivalent to...

 (England), Kamber

Kamber

Camber, also Kamber, was the legendary first king of Cambria, according to the Geoffrey of Monmouth in the first part of his influential 12th-century pseudohistory Historia Regum Britanniae. According to Geoffrey, Cambria, the classical name for Wales, was named for him.Camber was the son of...

 (Wales) and Albanactus

Albanactus

According to Geoffrey of Monmouth, Albanactus was the founding king of Albania or Albany. He was the youngest of three sons of Brutus, a descendant of Aeneas of Troy. According to legend, upon their father's death, the eldest son Locrinus was given Loegria, Camber was given Cambria and Albanactus...

 (Scotland). Locrinus agreed to marry Corineus's daughter Gwendolen

Queen Gwendolen

Queen Gwendolen was a legendary ruler of Britain, whose life is described in Geoffrey of Monmouth's Historia Regum Britanniae. According to Geoffrey, she was the wife of King Locrinus of the Britons until she defeated him in battle and took on the leadership of Britain herself.Gwendolen was the...

, but fell in love instead with Estrildis

Estrildis

Estrildis was the legendary daughter of the king of Germany according to Geoffrey of Monmouth. She was found in the ships of Humber the Hun after his defeat by Locrinus, son of Brutus. She was said to be the most beautiful woman of her time and Locrinus sought to marry her. Unfortunately,...

, a captured German princess. Corineus threatened war in response to this affront, and to pacify him Locrinus married Gwendolen, but kept Estrildis as his secret mistress. After Corineus died Locrinus divorced Gwendolen and married Estrildis, and Gwendolen responded by raising an army in Cornwall and making war against her ex-husband. Locrinus was killed in battle, and Gwendolen threw Estrildis and her daughter, Habren, into the River Severn

River Severn

The River Severn is the longest river in Great Britain, at about , but the second longest on the British Isles, behind the River Shannon. It rises at an altitude of on Plynlimon, Ceredigion near Llanidloes, Powys, in the Cambrian Mountains of mid Wales...

.

The tale is preserved in the works of later writers, including Michael Drayton

Michael Drayton

Michael Drayton was an English poet who came to prominence in the Elizabethan era.-Early life:He was born at Hartshill, near Nuneaton, Warwickshire, England. Almost nothing is known about his early life, beyond the fact that in 1580 he was in the service of Thomas Goodere of Collingham,...

 and John Milton

John Milton

John Milton was an English poet, polemicist, a scholarly man of letters, and a civil servant for the Commonwealth of England under Oliver Cromwell...

.