thumb|Ruins (2008) of Castle Grevenburg thumb|A contemporary depiction of the castle at its greatest extent Grevenburg was a castle in Traben-Trarbach in the federal state of Rhineland-Palatinate in Germany. It was the residence of the Rear County of Sponheim and today is a ruin following its destruction by the French in 1734.
thumb|Ruins (2008) of Castle Grevenburg thumb|A contemporary depiction of the castle at its greatest extent Grevenburg was a castle in Traben-Trarbach in the federal state of Rhineland-Palatinate in Germany. It was the residence of the Rear County of Sponheim and today is a ruin following its destruction by the French in 1734.
== History == The castle was built in 1350 by the Count Johann III of Sponheim-Starkenburg and replaced Castle Starkenburg as the residence of the Rear County of Sponheim. With the extinction of the ruling male line of the Rhenish branch of the House of Sponheim in 1437 the castle became seat of the bailiff of the new Counts to Sponheim (Baden and Palatinate-Simmern or Palatinate-Zweibrücken or Palatinate-Birkenfeld).
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).