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.
German throne dispute The German throne dispute or German throne controversy (German: "Deutscher Thronstreit" ) was a political conflict in the Holy Roman Empire at the end of the 12th and beginning of the 13th centuries. This dispute between the House of Hohenstaufen and House of Welf was over the successor to Emperor Henry VI who had just died. After a conflict lasting almost 20 years the Hohenstaufens gained the upper hand in the guise of Frederick II.