Question: Who is the maternal grandfather of Prince Frederick Of Hohenzollern-Sigmaringen?
Sentence (from "Prince Frederick of Hohenzollern-Sigmaringen"): Prince Frederick of Hohenzollern-Sigmaringen  (25 June 1843, Schloss Inzigkofen, Inzigkofen, Hohenzollern-Sigmaringen – 2 December 1904, Munich, Kingdom of Bavaria) was a member of the House of Hohenzollern-Sigmaringen and a Prussian General of the Cavalry.
Relevant evidence: No