In 1821 , it became part of the newly founded Archdiocese of Freiburg .
The town was made the seat of a deanery , which included not only the parishes within Ettlingen proper , but also those in surrounding villages and neighboring municipalities .
In 1821 , it became part of the newly founded Archdiocese of Freiburg , and the town was made the seat of a deanery , which included not only the parishes within Ettlingen proper , but also those in surrounding villages and neighboring municipalities .