Johannes Mangon
Johannes Mangon was a Francophone Belgian composer. He was selected while a boy in Liége to join the choir at the Cathedral of Aix-la-Chapelle, that is to say Aachen in modern Germany. He rose to become maître de chapelle. Among his surviving works are 20 masses. He died of the plague in 1578 and was succeeded by Lambertus de Monte and then Michael Wilhelm.