Yes, there is indeed a village of Gangloff - and is it ever tiny! It took about 10 minutes to walk from one end of the village to the other when I was there last Fall.
The village is in Germany, in the state of Rheinland-Pfalz, near Bad Kreuznach. The area of Germany in which it lies has been part of both France and Germany over the centuries - it is the Alsace region. I have photos that I could email if you are interested.
San Francisco, CA