Wikipedia
Sayn-Wittgenstein-Berleburg
Sayn-Wittgenstein-Berleburg was one of several imperial counties ruled by the House of Sayn-Wittgenstein.
Most of the former county is located in the present district of Siegen-Wittgenstein (in the modern state of North Rhine-Westphalia), Germany. Its seat was the town and palace in Berleburg (now Bad Berleburg).
Sayn-Wittgenstein-Berleburg was a partition of Sayn-Wittgenstein in the 16th century; the southern and more-developed portion was the County of Sayn-Wittgenstein-Wittgenstein with its seat Laaspe (now Bad Laasphe). Wittgenstein-Berleburg was raised from a county to a principality (Reichsfürstentum) in 1792, and was mediatised to the Grand Duchy of Hesse in 1806 before being annexed to Prussia in 1816.