Simon II, Duke of Lorraine

Simon II (1140–1207) succeeded his father Matthias I as Duke of Upper Lorraine in 1176. His mother favoured his younger brother Frederick, so Simon had an assembly of nobles confirm him and concede feudal privileges, creating the Estates of Lorraine.

Frederick, granted Bitche as an appanage, still revolted; after three years the Treaty of Ribemont split the duchy, leaving Simon the French-speaking south and Frederick the German-speaking north.

His marriage to Ida was childless, and he named his nephew Frederick his heir, although his brother ultimately succeeded him. He abdicated to a monastery in 1205 and died on 4 January 1207.