I have Katharina Rogalski in my lineage as well. Do you have anyinformation on her or her family. I will check the Grandma 4 database and see what I can find out. She died in Dec 13, 1805 in Fuerstenau, Molotschna, Russia (Ukraine), M. 19 may 1750 in Neukirch, Prussia and thanks to your emails I know she has a brother now.
Did you have or want any more info on the marriage and those families?