Cybi
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'. == Life in Cornwall == The vita of Cybi, found in two (Latin) forms written about 1200, is of very doubtful value, but may be right in making him the son of a Cornish noble who was princeps militae, at a court between the Tamar and the Lynher, possibly Gelliwig.