Ösel-wiek-icon Bishopric of Ösel-Wiekball was a Bishopric in Estonia-icon Estoniaball, in what is now Saare-icon Saareball, Hiiu-icon Hiiuball and Lääne-icon Laaneball. Created as a state of the HRE-icon Holy Roman Empireball in 1228. The Bishopric ceased to exists in 1560 when the Duke of Holstein was elected as Bishop and he Ceded Wiekball to Poland-Lithuania-icon Poland-Lithuaniaball.

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