Frederick V, Count of Zollern died at which ancestral seat atop Mount Hohenzollern?
Frederick V, Count of Zollern: Friedrich V. of Zollern (died: 24 May 1289 at Hohenzollern Castle) nicknamed, "the Illustrious" was a Count of Zollern. Hohenzollern Castle: Hohenzollern Castle (German:    ) is the ancestral seat of the imperial House of Hohenzollern. Hohenzollern Castle:  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.
Hohenzollern Castle