Tadec of Landevennec

Tadec, also called Tudec, was, according to tradition, a hieromonk of the monastery of Landévennec in Armorica in the sixth century, killed by the lord of the land of Faou in the church of Daoulas, during the service. He is reckoned a hieromartyr. He is among the Breton saints not officially recognized by the Catholic Church. The Russian source commemorates him on 2 December. Our sources show no Orthodox canonization.

According to tradition, the lord of Faou, a pagan, committed a double crime in the church of Daoulas. Learning that the abbots of the monasteries of Cornouaille had gathered not far from his lands, for union, he, accompanied by some of his subjects, locked the doors of the church in which were the enemies of his false belief. Saint Tadec (or Tudec) was killed at the altar, and Saint Judulus had his head cut off as he fled toward Landévennec.

But God avenged his servants. A terrible dragon ravaged the settlement of Faou and its surroundings, the lord fell prey to an evil spirit, and it took all the power of Saint Paul, bishop of Léon, to defeat the monster and heal the murderer. The lord, made a Christian, founded for his crime the monastery of Daoulas, which means two wounds, or two sorrows, at the place where Judulus had been killed by him.