Trudo was a seventh-century monk and abbot who lived in the Hesbaye region. Born in Zerkingen around 629, he dedicated his life to religious service, studying under the Bishop of Metz at the Church of St. Stephen. After his ordination, he returned to his home district to preach the Gospel. He established a church at Sarchinium, which eventually grew into the monastery that became Sint-Truiden Abbey. Because of his extensive missionary work in the area, he is remembered as the Apostle of Hesbaye.