German American Names  
 
   
 

Dictionary of American Family Names, page Iv quotes:

“In many situations and at various times in the history of immigration to the United States, German immigrants and their descendants found it desirable to hide the connections to their German homeland by having changed their names officially changed. The resulting names look completely English and since nothing in the spelling of their names suggests their German origin, the bearers nowadays very often are not aware of their German origin”

This citation explain quite simple the problem of German American Names, they are Americanized, misspelled, translated or deliberately changed. This site points from an American name to its German cogname. And it is most cases  is a many to one relation. That does mean that a single German name may have various Americans names, see an example:


American

%

German

Colclasure

64.4

Kalklöser

Culclasure

64.4

Colglazier

61.9

Coltglesser

60.4

So Colclasure compares a 64.4% to its original German name.