Principality of Lüneburg
When the Principality of Lüneburg emerged as a result of the division of Brunswick-Lüneburg in 1269, the domain of the Lüneburg princes consisted of a large number of territorial rights in the region of Lüneburg. However, it could not be described as a unified state, because many rights were owned by other vassals of the imperial crown. Not until the acquisition of numerous counties and rights in the 13th and 14th centuries did the rulers of Lüneburg succeed in building a unified state. Following the division of the principalities of Brunswick-Wolfenbüttel and Lüneburg between Bernard and Henry in 1409, the territorial development of the state was largely complete. At that time, the Principality of Lüneburg included the larger part of the Lüneburg Heath and the Wendland, and measured about .