Saint Cybi, or Cuby, 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'.
Mural of Cybi in Holyhead, Anglesey by artist Gary Drostle
Seiriol was an early 6th-century saint, who created a cell at Penmon Priory on Anglesey, off the coast of north Wales. He later moved to Ynys Seiriol.
Cybi
…Cybi's Island"). He founded a large and important monastery there in the area where St Cybi's Church is now located. Cybi was a great friend of Saint Seiriol. He would always face the Sun while travelling to meet him and his resulting tanned complexion led to him being known as Cybi Felyn. This picturesque…