Complex sentence: Highgrove House was built in 1796 to 1798 by John Paul Paul, and believed to have been designed by architect Anthony Keck, it belonged to Paul's descendants until 1860.
Split into simpler sentences: Highgrove House was built in 1796 to 1798 by John Paul Paul, and believed to have been designed by architect Anthony Keck. It belonged to Paul's descendants until 1860.