House Of Schlüsselberg
The House of Schlüsselberg was a German nobility, Franconian aristocratic family which was a member of the Uradel, high nobility. Until it died out in 1347, the family was able to establish itself firmly in the region of Franconian Switzerland and turned out to be unwelcome competition for the bishops of Bamberg. The Schlüsselbergs founded ''inter alia'' the town of a number of Schlüsselfeld in 1336 as well as Schlüsselau Abbey. [Baidu]