Paying lawyers to challenge the Polish law on the basis of an ustaw from 1925 is nothing but a waste of money.
Plainly, jon is not a lawyer. Lawyers deal with "conflicts of law" frequently. One basic tenant is that constitutions trump statutory law. With regard to the OP's grandmother, her citizenship was based on the 1920 citizenship law, as interpreted by the Second Republic. Under the present constitution, the government can't strip anyone of citizenship, and certainly not after he/she has died, to deny citizenship rights to the descendants. As related to me by a university professor in the nation, a person was either born a citizen before Tusk's "procedure" law or not. Such a "procedural" law for getting a passport cannot deprive anyone of constitutional rights, such as citizenship. The process is quite complicated and initial decisions are made by bureaucrats, not judges or ministry officials. A good lawyer keeps them honest. Only a fool would file the petition without one for a claim based on the 1920 laws. This is not Germany or Italy where the foreign born are welcomed back readily. Germany's population is bigger for this reason.
There are also companies that can apply for citizenship for those eligible.
Only an idiot would do this. Yes, agents can file the paperwork, but they will not answer objections or threaten litigation for human rights and constitutional issues.
I'm surprised...that citizenship by descent would even apply here.
Clearly, no administrator had the slightest suspicion that jon here was eligible for citizenship by descent. Otherwise that issue was required, as a matter of law, to have been decided first, before he could naturalise. I call BS on jon's ancestry claim.
FWIW, information was put on another site, as it was requested. People got tired of the hijackings by the usual terrorists.
And, no jon and his sidekick don't really know me. Ignore all of their venom.