The castle of Jever was built by Prince Edo Wiemken (d. 1410), the ruler of Jeverland, a populous district which in 1575 came under the rule of the dukes of Oldenburg. In 1603 it passed to the house of Anhalt and was later the property of the empress Catherine II. of Russia, a member of this family. In 1814 it came again into the possession of Oldenburg.
See D. Hohnholz, Aus Jevers Vorgangenheit (Jever, 1886); Hagena, Jeverland bis zum Jahr 1500 (Oldenburg, 1902); and F. W. Riemann, Geschichte des Jeverlandes (Jever, 1896).
JEVEROS (Jeberos, Jibaros, Jivaros or Givaros), a tribe of South American Indians on the upper Marañon, Peru, where they wander in the forests. The tribe has many branches and there are frequent tribal wars, but they have always united against a common enemy. Juan de Velasco declares them to be faithful, noble and amiable. They are brave and warlike, and though upon the conquest of Peru they temporarily submitted, a general insurrection in 1599 won them back their liberty. Curious dried human heads, supposed to have been objects of worship, have been found among the Jeveros (see Ethnol. Soc. Trans. 1862, W. Bollaert).