In 986 Zeven was first mentioned in a document of the BenedictineZeven Convent [de] inHeeslingen, then giving its name askivinan à Heeslingen (Kivinan near Heeslingen). In 1141 theconvent was relocated to Zeven. The convent played a determining role in Zeven's history. Zeven belonged to the oldDuchy of Saxony and at its dissolution in 1180 Zeven became a part of the newly foundedPrince-Archbishopric of Bremen, the princely territory ofimperial immediacy ruled by the respective holder of thearchiepiscopal see of Bremen. During theProtestant Reformation the majority of the nun clung toCatholicism, while most laymen adoptedLutheranism.
In the course of theThirty Years' War troops of theCatholic League underJohan 't Serclaes, Count of Tilly conquered the Prince-Archbishopric in 1627/1628. The Leaguist takeover enabledFerdinand II, Holy Roman Emperor, to implement theEdict of Restitution, decreed March 6, 1629, within thePrince-Archbishopric of Bremen and thePrince-Bishopric of Verden. The convent of Zeven - still maintaining Roman Catholic rite - became the local stronghold for a reCatholicisation within the scope ofCounter-Reformation. The nuns, who had converted to Lutheranism, were then expelled from the convent.
In 1632 troops of the legitimate ruler of the Prince-Archbishopric, AdministratorJohn Frederick, helped by troops from Sweden and the city of Bremen, reconquered the Prince-Archbishopric. The convent was dissolved. By thePeace of Westphalia the Prince-Archbishopric was transformed into theDuchy of Bremen in 1648, which - together with thePrincipality of Verden - was first given as a prey for its participation in the Thirty Years' War to be ruled inpersonal union by the Swedish Crown. These two imperial fiefs to the Swedes are thus colloquially calledBremen-Verden. The queen regnantChristina of Sweden, in personal union Duchess of Bremen and Princess of Verden installed in the two latter functions her residence in today'sQueen Christina House in Zeven, the oldest remaining profane building in town.
As inSweden proper, the constitutional and administrative bodies in the Swedish dominions gradually lost de facto importance due to ever growing centralisation.Bremen-Verden'sEstates lost more and more influence, and were less frequently convened. After 1692 the Estates' say had almost vanished.[2] This led to considerable unease among the Estates, so that in May 1694 representatives of Swedish Bremen-Verden'sgeneral government and the Estates met at the former convent of Zeven to confer on the status of the Duchies.
Local businesses include the head office of the recently createdDMK dairy combine (before 2011Nordmilch), producing milk based products such asquark under the well known (throughoutGermany) "Milram" label.
Christian-Friedrich Vahl (born 1955), heart surgeon and Director of the Department of Cardiac, Thoracic and Vascular Surgery at Johannes Gutenberg University Mainz
Doris Fitschen (1968-2025), former national footballer; played a total of 144 matches between 1986 and 2001 with the German women's team
^Beate Christine Fiedler, 'Die Entwicklung der schwedischen Staatsform im 17. Jahrhundert und ihre Auswirkung auf die deutschen Provinzen Bremen und Verden', In:Landschaft und regionale Identität: Beiträge zur Geschichte der ehemaligen Herzogtümer Bremen und Verden und des Landes Hadeln, Heinz-Joachim Schulze (ed.), Stade: Landschaftsverband der ehemaligen Herzogtümer Bremen und Verden, 1989, (Schriftenreihe des Landschaftsverbandes der ehemaligen Herzogtümer Bremen und Verden; vol. 3), pp. 84–96, here p. 92.