Jeverland refers to the northern part of the present-day district of Friesland in northern Germany with the town of Jever as the seat of its local government.
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The Jeverland was formed in the 15th century from the Barony of Jever, which itself descended from the Banter Viertel, part of Östringen and the Wangerland.
By contrast, Ost-Friesland includes, as a rule, the other traditionally Frisian parts of the peninsula: the town of Wilhelmshaven and the Oldenburg district of Friesland (Jeverland and Friesische Wehde).
Maria of Jever, known in Jeverland as Miss Maria (5 September 1500 in Jever – 20 February 1575, ibid.) was the last ruler of the Lordship of Jever from the Wiemken family.