In the Thirty Years' War after the Battle of Lutter on 17/27 August 1626&lt;a href="Old%20Style%20and%20New%20Style%20dates"&gt;O.S./N.S.&lt;/a&gt; the Catholic Leaguist forces invaded the Bremian prince-archbishopric, capturing one fortified city after the other. After the surrender of Stade on 27 April/7 May 1628O.S./N.S. the Leaguists occupied all the state, including Himmelpforten. Between 1628 and 1629 most Protestant preachers fled the area. In September 1629 the Imperial Commission of Restitution ordered Himmelpforten Convent to hand in a complete register of all its possessions and revenues. Prioress Gerdruth von Campe informed Provost Franz Marschalck, then residing in safe Bremen out of reach for the Leaguist occupants and the Restitution Commission, who on 8/18 October 1629O.S./N.S. personally delivered the demanded information to the Commission then residing in Verden upon Aller.