Maternus, also known as Maternus II, was the first known bishop of Cologne, reportedly also the third bishop of Trier, and founder of the diocese of Tongeren. He is venerated as a saint in the Catholic and Eastern Orthodox churches. The Basilica of Saint Maternus in Walcourt, Belgium was allegedly founded by him.

09-14

c. 285

September 14, 315

canonized

9

14