Several people have written in looking for any information that can be found about their family members from Klodawa.  One simple first step that is accessible to all, and quite easy to use is the Yad Vashem Shoah Database.  In this database you can look up by town, or by family name anyone you are looking for.  To get to the database, use this link:
http://www.yadvashem.org/lwp/workplace/IY_HON_Entrance

Once there you will see: "To search the Database or submit names Click Here".  

Once you click, you will see boxes to enter either family name or location, or both.  It is a simple and powerful tool, and should be one of the first places you look, if you haven't already.  Also, as a search tip, try different spellings of the last name, they are not always correct.  Klodawa, itself has about 1000 names listed.  
 
I hope this will help you in your search.

Good luck!
Judy