Cybi (483–555)
Born 483 CE, died 555 CE.
Saint Cybi (Welsh), or Cuby (Cornish), was a 6th-century Cornish bishop, saint, and, briefly, king, who worked largely in Cornwall and North Wales: his biography is recorded in two slightly variant medieval 'lives'.
Text from the Wikipedia article Cybi, licensed CC BY-SA 4.0.