Complex sentence: The town of Blumberg is in the region where the ancient source for the Danube is situated, the former glacial valley between Eichberg and Buchberg, and its official origins date from the 13th Century with the "Masters of Blumberg" first mentioned in 1260.
Split into simpler sentences: The town of Blumberg lies in the region where the ancient source of the Danube is situated, the former glacial valley between Eichberg and Buchberg. Its official origins date from the 13th Century, with the "Masters of Blumberg" first mentioned in 1260.