Synod of Brefi
The Synod of Brefi was a church council held at Llanddewi Brefi in the county of Ceredigion in Wales around 545.
The synod was apparently called in order to condemn the heretical teachings of Pelagius, although this is far from certain. It was an important milestone in the rise of Saint David. The story goes that Saint Paulinus persuaded Saint Dubricius, the senior bishop there, to allow Saint David, a minor abbot, to address the crowd.
It is said that the small hill upon which the church stands marks the spot where the ground was miraculously raised up under Saint David so that he could be heard better at this Synod. His words were so eloquent that Dubricius retired in David's favour. One of his first duties was to consecrate Saint Deiniol as Bishop of Bangor. It is also said that the synod was called while Saint Cadoc, Abbot of Llancarfan, was away in Brittany. In disgust, he refused to return for many years.