"Frederick II, Duke of Swabia"@en . . . "Frederick II the One-Eyed"@en . "1147Z"^^ . . . "Friedrich II., der Ein\u00E4ugige (German)"@en . "1090Z"^^ . "Frederick II (1090 \u2013 6 April 1147), called the One-Eyed, was Duke of Swabia from 1105 until his death, the second from the Hohenstaufen dynasty. His younger brother Conrad was elected King of the Romans in 1138."@en . . . "Duke of Swabia"@en . . "1147-04-06Z"^^ . "Duke of Swabia (1105-1147)" . .