Marius_Klumperbeek
Marius Klumperbeek
Dutch rower
Marius Pieter Louis Klumperbeek (born 7 August 1938) is a retired Dutch coxswain who competed in the 1960 and 1964 Summer Olympics. In 1960 his coxed four team was eliminated in the semi-finals; he won a bronze medal in the same event four years later.[1][2]