Klotz Family History
Klotz Name Meaning
German: nickname for a clumsy, awkward man, from Middle High German klotz ‘lump’, ‘block’, cognate with modern English clot, which is similarly used in a transferred sense to denote a stupid person. Jewish (Ashkenazic): cognate of 1, from modern German Klotz ‘lump’, ‘block’, or Yiddish klots.
Source: Dictionary of American Family Names ©2013, Oxford University Press