- Frederick II, Frederick the Great - king of Prussia from 1740 to 1786; brought Prussia military prestige by winning the War of the Austrian Succession and the Seven Years' War (1712-1786)
--1 is a kind of king, male monarch
- Frederick II, Holy Roman Emperor Frederick II - the Holy Roman Emperor who led the Sixth Crusade and crowned himself king of Jerusalem (1194-1250)
--2 is a kind of Holy Roman Emperor