Polish citizenship by descent - Great-grandfather left after the 1920 citizenship law but before 1921 census?

I emailed Lexmotion and said that they most likely cannot help.

I know that his birth records are in the archives in Ostrowiec, I've had confirmation of this. He arrived in the US in 1921 and my grandfather was born 2 or so months after they arrived. My great-grandfather didn't complete his military service in Poland, and was naturalized around 1927, but as far as I understand, because my grandfather turned 18 before my great-grandfather aged out of obligatory military service, he didn't lose his Polish citizenship.

The issue is they told me that because my great-grandfather emigrated before the 1921 census, it will be impossible to prove that he is a citizen. Is this really the case?

Thank you!

If it matters, he also seems to have lived in Osiek.

RELATED:

Hi all

I have a few questions about this. If anyone could help, that would be really appreciated. My grandfather was born in Poland in the 1920s and naturalised in England in the 1960's after fighting in WWII. I understand that I need to gather various documents such as birth certificates and send them off with the application to the Polish embassy. I currently have zero documents so they would all have to be retrieved from archives.

Will there be any problems due to my grandfather having fought in WWII?

What about naturalisation in England, does that affect the process?

Do you have to go to Poland to get documents from the archives?

Apparently there are paid services that can do all this for you, are they good and can you recommend any?

Thanks
Tadeusz

@UraniumFever
Hello :) What year was your great-grandfather born?

It may be a matter of eligibility (according to the Polish law), not the lack of population census.