Are you sure that the Polish church will accept a letter from a church in Ireland as a certificate of no impediment? I'd be very surprised if a Polish registrar did.
AFAIK the Chuch will accept it....but as usual, it depends on the priest. Personally, since I live here, I had to go to Warsaw, fill out a document and get it signed by an representative of the ambassador.
Then I had to attend a 20 minute interview in my local Urząd office to confirm that we were not cousins, or adopted siblings, and of sound body and mind.....a strange 20 minutes.
I did some more digging re: Letter of Freedom...... Civil Letter of Freedom, Certificate de Coutume or a Nulla Osta....ok, so the first 2 are the same, they are civil documents saying you are not married, the Nulla Osta, that's what the priest gives you...however, as Harry points out, it's not technically a legal document, and it's only a document that is used in the Church.
However, when getting married in a Polish Catholic Church, then you are also 'state' married, so it should be enough.....however, it may not....if not then you need the 'Civil Letter of Freedom'
Ireland, under normal circumstances, does not issue such documents........why have a document to prove that someone isn't married? The precedence is to have a document that proves that someone is
Anyway Slan, here's what you need to do:
If you are not sure of the legal requirements for marriage in the country you will be marrying in, contact the relevant embassy or the religious authorities in that country in advance to find out what is required.
To apply for a Certificate of Freedom to Marry, Irish citizens living abroad should contact their nearest Irish embassy or the Consular Section of the Department of Foreign Affairs and Trade.
Irish citizens living in Ireland should apply to the Consular Section of the Department of Foreign Affairs and Trade. If you are getting married in Italy for example, your Certificate of Freedom to Marry will be sent by the Department to the Irish embassy in Rome who will then forward it to the district where you will be married. In most other cases, the Certificate of Freedom to Marry will be issued by the Department and sent directly to you.
So, you either call the embassy in Warsaw if you live here, or get in touch with the Department of Foreign Affairs if you're living back in Ireland :)