Thank you for your help and for the links. I have been to Stare Gronowo to see the church in 2009 but it was closed. I had also previously looked at the Church-book duplicates that end in 1859 on micro-film at an LDS Family History Centre. I was in the Koszalin Archives last fall and they were able to produce a church-book from Grunau that covered a period well into the 1870's. My family left the Grunau area to go to Canada in 1872 so my research in Koszalin only went up to that date. I did not record how much further the records went after 1872. I find it curious that the Mormons do show the book that I saw in their micro-film catalog. I am thinking it may have been micro-filmed and then not labelled correctly. The LDS catalog shows a micro-film labelled "Kirchenbuchduplikat, 1871-1874, Evangelische Kirche Neu Grunau (Kr. Flatow)". There was no church in Neu Grunau that I am aware of so I will be curious to see what is in it. My family was from Neu Grunau and they were identified as a 'colonists' in the Grunau records. They came to Neu Grunau sometime around 1850 from areas to the west.
Regards,
David Roepke