Ardcath's church was dedicated to St Mary the Blessed Virgin as was a tradition of the Norman settlement with the tithe of the Church and Parish being directed to the Canons of Llananthony (prima and secunda) Wales from 1172 to 1541. The church also had an active 'confraternity' which was a body corporate dedicated to maintaining religious services within the Church. Such organisations were often established by Charter and survived the Reformation. There was a similar organisation at the Church in the then adjoining parish of Piercetown.