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.
Kaiserpfalz The term Kaiserpfalz (] , "imperial palace") or Königspfalz (] , "royal palace", from Middle High German "phal[en]ze" to Old High German "phalanza" from Middle Latin "palatia" [plural] to Latin "palatium" "palace") refers to a number of castles and palaces across the Holy Roman Empire that served as temporary, secondary seats of power for the Holy Roman Emperor in the Early and High Middle Ages. The term was also used more rarely for a bishop who, as a territorial lord ("Landesherr"), had to provide the king and his entourage with board and lodging, a duty referred to as "Gastungspflicht".