Herzogtum Westfalen
Along with Eastphalia, Angria and Nordalbingia, Westphalia "(Westfalahi)" was originally a district of the Duchy of Saxony. At the time, large portions of its territory in the north lay in what today is Lower Saxony. Following the deposition of the Saxon duke Henry the Lion in 1180 and the subsequent belittlement of the duchy, Westphalia was elevated to a duchy in its own right by Emperor Barbarossa. The Duchy of Westphalia comprised only a small area south of the Lippe River.