2. The Palatinate was the land of the Count Palatine, a prince of the Holy Roman Empire. Geographically, the Palatinate was divided between two small territorial clusters: the Rhenish, or Lower Palatinate, and the Upper Palatinate. The Rhenish Palatinate included lands on both sides of the Middle Rhine River between its Main and Neckar tributaries. Its capital until the 18th century was Heidelberg. The Upper Palatinate was located in northern Bavaria, on both sides of the Naab River as it flows south toward the Danube and extended eastward to the Bohemian Forest. The boundaries of the Palatinate varied with the political and dynastic fortunes of the Counts Palatine.  After the defeat of Napoleon (1814-15), the Congress of Vienna gave the east-bank lands of the Rhine valley to Bavaria. These lands, together with some surrounding territories, again took the name of Palatinate in 1838.  Extracted from OliveTreeGeneology.