How did Emperor Frederick Barbarossa’s lineage shape his rule and influence the Holy Roman Empire? This book examines the lineage of Emperor Frederick Barbarossa, the powerful Holy Roman Emperor who reigned from 1155 until his death in 1190. The narrative traces his descent from the powerful Hohenstaufen family, exploring how his family’s history influenced his political strategies and ambitions to restore the empire’s former glory. The book delves into Barbarossa’s military campaigns, his struggle with the Papacy, and his attempts to centralize imperial authority. By examining his lineage and the complex political dynamics of medieval Europe, the book highlights how Frederick Barbarossa’s legacy shaped the Holy Roman Empire and European geopolitics in the late Middle Ages.