I too am searching for the birthplace of John Kubicki, somewere in Polish Prussia. Emigrated/immigrated c 1871 per census, first found in US in Portage Co. WI. Wife was Barbara nee Schroder, m.c1846. Two dtrs (known): Franciska, b. c1862, d. 1880; Anna, b. 6 Sep 1864, d. 6 Jul 1953 (my GGM). Both b. in Poland and d. in Stevens Point, WI.
After 4 years, is there any kind of fit?