Complex sentence: However one of the oldest settlements, the "Steppacher Hof", was already documented in the 12th century, and the town itself is believed to have originated long before that time as archaeological finds have shown the area was inhabited during the Stone Age.
Split into simpler sentences: However one of the oldest settlements, the "Steppacher Hof", was already documented in the 12th century. The town itself is believed to have originated long before that time, with archaeological discoveries showing the area was inhabited during the Stone Age.