Question: Who is the paternal grandfather of Frederick, Prince Of Hohenzollern?
Sentence (from "William, Prince of Hohenzollern"): William, Prince of Hohenzollern  (7 March 1864 in Schloss Benrath, near Düsseldorf – 22 October 1927 in Sigmaringen) was the eldest son of Leopold, Prince of Hohenzollern and Infanta Antónia of Portugal.
Relevant evidence: Yes