All,
I was googling Altenfließ in Kreis Regenwalde in Pomerania and found their church books for the years 1815 - 1847 online & free. You can actually download the entire book to pdf just in case the website goes away. The only reason I was looking for this town was due to the new Berlin Marriage records recently released. My direct ancestor Johann Wilhelm Friedrich Porath (b. 9 Dec 1860 in Teschendorf) married Emilie Augusta Johanna Falk (b. 1862), who was from Altenfließ, in Berlin on 27 Sep 1886.
Here is the direct link:
http://zbc.ksiaznica.szczecin.pl/dlibra/docmetadata?id=27914...There are a TON of Poraths in this church book and many other surnames. I found what appears to be Johann's parents marriage record on pg.136 of the pdf - Johann Friedrich Porath to Wilhelmina Frederika Giese on 06 May 1845. My Teschendorf, Kreis Regenwalde Porath ancestors are in here. If you look, this town was practically next door.
I hope this helps someone else out there. :)
Rebecca