What is the official language of the place where Regensberg was a family of counts from?
Regensberg family Regensberg was a family of counts from the Canton of Zürich in Switzerland. The family had possessions in the medieval Zürichgau from the probably mid-11th century and became extinct in 1331 AD. With the extinction of the male line, the city republic of Zürich laid claim to the Regensberg lands and formed the "Herrschaft Regensberg" respectively "Äussere Vogtei".
Nassau (region) Nassau is a geographical, historical and cultural region in today's Rhineland-Palatinate and Hesse in western Germany. Named for the town Nassau, it includes the territory of the Duchy of Nassau, a former sovereign country which existed until 1866. Occupied by Prussia and annexed into the Province of Hesse-Nassau in 1866, Nassau briefly became the name of a separate province, the Province of Nassau, in 1944. Much of the area is today part of the Nassau Nature Park. Nassau is also the name of the smaller Nassau collective municipality, the area surrounding the town of Nassau.