495–501 AD) was a semi-legendary king of Strathclyde in Scotland.
He flourished in the Hen Ogledd Period of Sub-Roman Britain and ruled from a castle at Alt Clut.
Legend holds he fought King Arthur.
This was a very turbulent time and coincided with the Anglo-Saxon invasion of England.
The most well-known was Gildas, which possibly accounts for the poor presentation of King Arthur (and also Constantine) in Gildas' writing.