Oerel belonged to thePrince-Archbishopric of Bremen, established in 1180. In 1648 the Prince-Archbishopric was transformed into theDuchy of Bremen, which was first ruled inpersonal union by the Swedish Crown - interrupted by a Danish occupation (1712–1715) - and from 1715 on by theHanoverian Crown. In 1807 the ephemeralKingdom of Westphalia annexed the Duchy, beforeFrance annexed it in 1810. In 1813 the Duchy was restored to theElectorate of Hanover, which - after its upgrade to theKingdom of Hanover in 1814 - incorporated the Duchy in areal union and the Ducal territory, including Oerel, became part of the newStade Region, established in 1823.