Thomas Hélye was a 13th-century Catholic priest and teacher from Biville, Normandy. Born around 1150, he dedicated much of his life to teaching children and preaching the gospel throughout various dioceses. Known for his ascetic lifestyle and commitment to catechesis, he traveled to Rome and Santiago de Compostela before studying theology in Paris. After his ordination, he focused on pastoral work, helping the poor and tending to the sick. He is remembered as a holy figure who lived a life of great simplicity and devotion.