St Edeyrn's Church

St Edeyrn's is one of a number of ancient Christian sites which were established soon after the founding of Llandaff Cathedral, as the Celtic church was anxious to spread itself through the region as swiftly as possible in order to secure its position. Saint Edeyrn and his associate Saint Isan were amongst the missionaries sent by Saint Teilo to perform this work. Isan founded the church in what is now Llanishen with Edeyrn. Edeyrn later founded a religious community on the banks of the Rhymney River (then Renis River). He is reputedly buried in the churchyard.