I have been researching my family since 1973.The RANSENBERG family comes from the Ruhr Valley in Germany.The towns they came from include CALLE, MESCHEDE, WENNEMAN,WALLEN,DORTMUND, DORSTFELD,ARNSBERG,WEISBADEN, METZ, ALLENDORF, to name a few.
The HOFMANN family comes from BUCHEN and HAINSTADT southeast of Frankfurt am MAIN.
The ROSENBUSCH family comes from BORKEN and AMONEBURG near KASSEL
The IKENBERG and WEIL family comes from NIEHEIM and STEINHEIM in WESTFALEN
I am also researching the REGENSTEIN family from WOLFSKEHLEN and GROSS GERAU (Near Darmstadt)
ROSENSTEIN family from BRAEKEL (Westfalen)