Noun: Frederick I
- Holy Roman Emperor from 1152 to 1190; conceded supremacy to the pope; drowned leading the Third Crusade (1122-1190)
- Frederick Barbarossa, Barbarossa
- Son of Frederick William who in 1701 became the first king of Prussia (1657-1713)
- Frederick I of Prussia
Type of: Holy Roman Emperor, king, male monarch, Rex
Part of: Hohenzollern
Encyclopedia: Frederick I, Duke of Wurttemberg