Klopp. Klopp is a German surname, from Middle Low German klopper ‘clapper’, ‘bobbin’, ‘hammer’. C.f. Chlodobert [1] Notable people with the surname include: Jürgen Klopp (born 1967), German football player and manager. Nico Klopp (1894–1930), Luxembourgian painter. Onno Klopp (1822-1903), German historian. Paul Klopp (born 1957 …
https://en.wikipedia.org/wiki/Klopp