Marcin Steinwald - We are looking for Marcin(Martin) Stajwald

I am looking for help in finding my ansestors. They were German citizens born in the territory of possibly in eastern Prussia. I dont know the actual date of birth but I have the last names and I know what year one of their sons was born. We are looking for Marcin(Martin) Stajwald (He was a Lutheran) and his wife Zofia (Sophie) Lipińska. Their son Mathes Stanwald was born in 1865. This couple had atleast one more or two kids but I am not positive of that fact. Mathew Steinwald at age 12 along with his older brother immigrated into Litvenia which was Poland at the time. Mathew is my great grandfather