 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 or Cybi the Tanned.He is also said to have attended the Synod of Llanddewi Brefi in Ceredigion where he advised some pilgrims on their journey to Ynys Enlli (Bardsey).