Saint Leudwinus, Count of Treves (Leodewin, Liutwin, Ludwin) (c. 660 - † 29. September, 722 in Reims) founded an abbey in Mettlach. He was Archbishop of Treves and Laon. His feast day is September 23. He is the patron saint of Mettlach parish and his relics are carried by procession at the annual Pentecost celebration through the town.