Hi Margaret,
the town of Jossa is to be found in the Hessen / Bavaria border region, east of Frankfurt am Main.
There are several Dammersbach in Germany, one of them "near" Jossa: nowadays a part of H�nfeld, some miles north of Jossa.
"Boppenrod" could not be found, you might consider "Bosse(n)rode" instead, near Bebra, again some miles north of H�nfeld.
All these towns/villages are very far away from East Prussia indeed and therefore not dealt with in this list.
Best regards,
Lothar Behlau, K�ln