I can help you.
KETTWIG and WERDEN are parts of ESSEN, a big town in the Ruhrgebiet, I live there. AACHEN is near the frontiers of Belgium and Netherlands, not very far from Köln (Cologne) in the west. My husband was born in Aachen.
I hope you can find the towns in your cards. Many greetings from Germany, Essen
I hope you can find