Klopp

The story

1. Proto-Indo-European · derived from*ḱlu-tó-s“famous”
2. Middle Low German · derived fromklopper“clapper, hammer, bobbin”
3. English todayKlopp

From the German surname, from Middle Low German klopper (“clapper, hammer, bobbin”), from the medieval name Chlodobert, from Frankish for "famously bright," from Proto-Germanic derivatives of Proto-Indo-European *ḱlu-tó-s (“famous”) << *ḱlew- (“to hear”) + *bʰerHǵ- (“to be bright, shine”). Compare Proto-Germanic *hleumô (“hearing”) and *berhtaz (“shining, bright”).