 He became a priest and was consecrated as a bishop, before he arrived home to find that his father was dead and he was King of Cornwall.Cybi politely declined the throne and, instead, travelled through his kingdom, preaching to the people and building churches at Duloe, Tregony, Cubert and Landulph.He then moved on to south Wales, founding churches at Llangybi between Usk and Caerleon in Monmouthshire, and Llanddyfrwyr-yn-Edeligion, before spending some time in Ireland.