I do not have knowledge of your specific Marquardts. However, while searching for my family (Kohlhoff) on a microfilm of the Church of Jesus Christ, Later Day Saints (Mormon), I came upon a lot of Marquardts. In fact one was married to a Kohlhoff (not a direct blood line). If you have access to a Family History Center, LDS, request their film:
LDS FHL INTL (1334635, Items 2-4). It contains transcripts, in German, of the original church records from 1824-1874, Evangelische Kirche, Sellin (Kr Greifenberg), Germany; now Zelin, Gryfice) Szczecin, Poland. It shows baptisms, marriages, deaths; includes Rütznow, Zicker, Neklatz, and Dadow.
As you might know Zirkwitz is now called Cerkwica. I believe that there is a separate LDS FHL INTL film for Zirkwitz; (1811-1874), LDS 1273109-10.
I hope this helps.