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The Guttenberg family is a wealthy Franconian family that was noble until all legal privileges of royalty and nobility were abolished in Germany in 1919 following the German revolution and proclamation of the republic at the end of World War I. It traces its origins back to 1149 with a Gundeloh von Blassenberg (Plassenberg), though the first mention in a document is dated 1158. The name Guttenberg is derived from Guttenberg in present-day Bavaria, and it was adopted by a Heinrich von Blassenberg around 1310.