Frederick V, Count of Zollern died at which ancestral seat atop Mount Hohenzollern?
Hohenzollern Castle Hohenzollern Castle (German:    ) is the ancestral seat of the imperial House of Hohenzollern. The third of three hilltop castles on the site, it is located atop Mount Hohenzollern, above and south of Hechingen, on the edge of the Swabian Jura of central Baden-Württemberg, Germany.
Oosterland, North Holland Oosterland is a village in the Dutch province of North Holland. It is a part of the municipality of Hollands Kroon, and lies about 17 km southeast of Den Helder. From 1918 to 1923, Oosterland was the residence of the exiled German crown prince, Friedrich Wilhelm von Hohenzollern.