Dear People?
A concensus yet? PlatteDuestch? Low German?
I think..means from the Low countries...ie..land is below sea level.
Same as in the U.S.A... The low countries are S.C. (Charleston), G.A. (Savannah!)...think about it..!!
<~~ does think Platte..[platteau], Simply means..Low Country..as in..BELOW Sea Level!!
Think about it!