Thomas of Celano
Thomas of Celano (chāläˈnō) [key], fl. 13th cent., Italian Franciscan friar. One of the first companions of St. Francis, he wrote the two principal lives of St. Francis, one for Gregory IX and the other for the minister general of the order. He was an early Franciscan missionary to Germany. He probably composed the sequence Dies irae and its celebrated plainsong.
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