He is the patron saint of Mettlach parish and his relics are carried by procession at the annual Pentecost celebration through the town.
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Saint Leudwinus, Count of Treves (Leodewin, Liutwin, Ludwin) (c. 660 - † 29. September, 722 in Reims) founded an abbey in Mettlach.
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His coffin was placed alone on a ship that was sailed by itself, first to Moselle, then Saar and finally docked at Mettlach where the church bells began to ring.