Question: Frederick Henry Louis, was a Prince of Prussia and the younger brother of Frederick the Great, was King of Prussia from 1740 until which year, the longest reign of any Hohenzollern king?
Sentence (from "Prince Henry of Prussia (1726–1802)"): He also served as a general and statesman, leading Prussian armies in the Silesian Wars and the Seven Years' War, having never lost a battle in the latter.
Relevant evidence: No