Gurgustius

Gurgustius (Welsh: Gwrwst) was a legendary king of the Britons as accounted by Geoffrey of Monmouth. He came to power in 788BC.^[1]

Gurgustius
Gurgustius from the Genealogical Chronicle of the Kings of England to Edward IV (c. 1461)
King of Britain
Reign	c. 788BCE
Predecessor	Rivallo
Successor	Sisillius I
Issue	Sisillius I Antonius, Duke of Cornwall
Father	Rivallo

He was the son of King Rivallo and was succeeded by his own son Sisillius I, and then Jago, who was Gurgustius' nephew (or possibly his grandson). Geoffrey has nothing to say of him beyond this.^[2]

Relation to Jago

In the Historia Regum Britanniae, Gurgustius is succeeded by his son Sisillius, who in turn is succeeded by Jago. The Latin text describes Jago as "Iago Gurgustii nepos". This is generally interpreted as meaning "Jago, Gurgustius's nephew", but could mean "Jago, Gurgustius's grandson" instead. Examples of the latter interpretation include the Black Book of Basingwerk (where Jago is Sisillius's son)^[3] and Michael A. Faletra's 2007 translation, which calls him "Iago, the grandson of Gurgustius".^[4]

Later tradition

The Book of Baglan (1600–1607) gives Gurgustius' name as Gorwst, and states that his second son, Antonius, was Duke of Cornwall.^[5]