Complex sentence: The Countess also constructed a corn mill in the area in 1284, rebuilt as a paper mill in 1658, destroyed by fire in the early 19th century and restored and in continued operation until 1885.
Split into simpler sentences: The Countess also constructed a corn mill in the area in 1284. It was rebuilt as a paper mill in 1658; the mill was destroyed by fire in the early 19th century, but was restored and continued operation until 1885.