Martin of Braga (in Latin Martinus Bracarensis, in Portuguese, known as Martinho de Dume c. 520–580 AD) was an archbishop of Bracara Augusta in Gallaecia (now Braga in Portugal), a missionary, a monastic founder, and an ecclesiastical author. According to his contemporary, the historian Gregory of Tours, Martin was plenus virtutibus ("full of virtue") and in tantum se litteris imbuit ut nulli secundus sui temporis haberetur ("he so instructed himself in learning that he was considered second to none in his lifetime"). He was later canonized in the Catholic Church as well as in the Eastern and Oriental Orthodox churches, for his work in converting the inhabitants of Gallaecia to Chalcedonian Christianity. His feast day is 20 March.