The Sejm, announced during the previous assembly in the spring of the same year, was convoked in late August 1635. Pre-Sejm Sejmiks were held in October 1635. Sessions opened on November 21st 1635. Chamberlain of Zakroczym Mikołaj Łopacki was elected Speaker of the Deputies Chamber. Debates focused on confirming the peace accord entered into with the Swedes in Sztumska Wieś on September 12th 1635. Numbers of so-called “quarter tax” regular army units were reduced; customs