Φρειδερίκος Βαρβαρόσα, known as Frederick Barbarossa, was a Holy Roman Emperor who reigned from 1155 until his death in 1190. He is remembered for his efforts to consolidate the empire and strengthen its authority over the German states. His nickname, which means "Red Beard" in Italian, reflects his distinctive appearance. Frederick was also involved in the Crusades, participating in the Third Crusade to reclaim Jerusalem. He led a large army but tragically drowned in the Saleph River in modern-day Turkey. His death marked a significant turning point for the Crusade and the Holy Roman Empire, leading to a decline in imperial power.