I've been helping a friend to research his Polish ancestors and we have a lingering mystery to solve.
Friend's grandmother, Lillian, was born in 1902 in the Kujawsko-Pomorskie region of Poland (German side of Poland). According to older family members, no one knows who her father is. I found Lillian's birth record online and her father is nowhere to be found on it. Her mother, Mary, was 19 at the time of the birth and the birth record indicates Mary gave birth at her mother's house. Because of her young age, we assume Mary became pregnant with Lillian out of wedlock, and this is why the father's identity was kept secret. The only marriage I found for Mary is in 1905, at age 22, to a man named John, who is not Lillian's biological father and who became her stepfather. One year after they married, all 3 immigrated to the US.
My friend hasn't taken a DNA test yet which I'm sure would help greatly. So for now, we are relying on research to try to find out.
Are there any other Polish documents I could research that might reveal or give us a clue as to who Lillian's father is?