. . "1864-10-30Z"^^ . "1864Z"^^ . "Hertugd\u00F8mmet Holsten''"@en . "1474Z"^^ . "The Duchy of Holstein (German: Herzogtum Holstein, Danish: Hertugd\u00F8mmet Holsten) was the northernmost state of the Holy Roman Empire, located in the present German state of Schleswig-Holstein. It was established when King Christian I of Denmark had his County of Holstein-Rendsburg elevated to a duchy by Emperor Frederick III in 1474."@en . . . "1474-02-14Z"^^ . "''Herzogtum Holstein"@en . "Holstein"@en . . "Duchy of Holstein"@en .