Michael,
Here it is another three years but I hope you still have access. Wandering away from the Benzings a little. Have just found your family as part of the Koch family tree and would love to make contact. My great grandmother was Louesia Koch, sister of Heinrich Koch who is grandfather of Brigitte Koch Benzing. Also trying to trace the Koch family in Poland/Germany as well as Brigitte's sister who was rumoured to have gone to England after WW2..
Regards
Shirley