CONRAD

the founder of the Suabian dynasty of Hohenstaufen, was King of Germany and Emperor of the Romans from 1138 to 1152 A.D. He joined the Second Crusade, and his marriage with a Greek prince led to the adoption of the double-headed eagle on the Austrian arms. The factions of Guelf and Ghibelline rose during his struggle with Henry the Proud. He was succeeded by his nephew, Frederick Barb a ro a.