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Holstein,former duchy, N central Germany, the part of Schleswig-Holstein S of the Eider River. Kiel and Rendsburg were the chief cities. For a description of Holstein and for its history after 1814, see Schleswig-HolsteinSchleswig-Holstein
, state (1994 pop. 2,595,000), c.6,050 sq mi (15,670 sq km), NW Germany. Kiel (the capital and chief port), Lübeck, Flensburg, and Neumünster are the major cities.
..... Click the link for more information. . For a time part of the duchy of Saxony, Holstein was created (1111) a county of the Holy Roman Empire and was bestowed on Adolf of Schauenburg. In 1459, Holstein's Christian I, a Danish heir to the throne, established a personal union with Denmark, to the great displeasure of the German majority. In 1474, Emperor Frederick III raised Holstein to a duchy under the immediate suzerainty of the Holy Roman Empire (as distinct from Schleswig, which was outside the imperial jurisdiction).
a region of N Germany, in S Schleswig-Holstein: in early times a German duchy of Saxony; became a duchy of Denmark in 1474; finally incorporated into Prussia in 1866