According to this site showing the dispersion of family names in
Germany, there are currently up to 25 people with the last name GERNSHEIM
in 5 different towns in Germany.

https://www.kartezumnamen.eu/index.php?sur=Gernsheim&;s=Suchen

So the family name lives on in Germany, albeit for very few people.

Regards, Rod Miller rpm@gmx.de