Eligibility:
Parent or grandparent born in Ireland
Requirements:
Documentation: birth certificates
No residence requirement
No language requirement
Sources:
https://www.citizensinformation.ie/en/moving-country/irish-citizenship/foreign-births-register/ → (Citizens Information – Public Services Information from the Citizens Information Board)
https://www.dfa.ie/irish-embassy/great-britain/our-services/citizenship/born-outside-ireland/ → (Department of Foreign Affairs – Embassy of Ireland in Great Britain)
Eligibiility:
Documentation proving parent or grandparent born in Italy
Descendants through maternal line, applicant must have been born on or after January 1, 1948
Ancestor must have been born after March 17, 1861, or died after that date
Unbroken chain of Italian citizenship from ancestor to the applicant, with no voluntary renunciation
Requirements:
Documentation: birth certificates
No residence requirement
No language requirement
Sources:
https://conslondra.esteri.it/en/servizi-consolari-e-visti/servizi-per-il-cittadino-straniero/cittadinanza/cittadinanza-per-discendenza/ → (Italian Consulate in London – Citizenship by Descent / “Jure Sanguinis” Guidelines from the Ministry of Foreign Affairs and International Cooperation)
Eligibiility:
Parent, grandparent, or great-grandparent born in Germany
Unbroken lineage from ancestor to applicant, no voluntary renunciation
Requirements:
Documentation: birth/marriage/death certificates, as well as any other documents proving ancestor's German citizenship
No residence requirement
No language requirement
Sources:
https://www.bva.bund.de/EN/Services/Citizens/ID-Documents-Law/Citizenship/citizenship_node.html
→ (Federal Office of Administration – Citizenship Services page for determining German citizenship, including by descent and restitution)
https://www.bva.bund.de/DE/Services/Buerger/Ausweis-Dokumente-Recht/Staatsangehoerigkeit/Feststellung_Start/Feststellung1_node.html
→ (Federal Office of Administration – Application for declaration of German citizenship by descent [“Feststellung der deutschen Staatsangehörigkeit”])
https://www.bva.bund.de/DE/Services/Buerger/Ausweis-Dokumente-Recht/Staatsangehoerigkeit/Feststellung_Start/Feststellung/01_Informationen_Feststellung/01_02_F_wie_geht_es/01_02_F_wie_geht_es_node.html → (BVA – Affairs for declaration-acquisition of citizenship via ancestry per Article V ("Feststellung") in Germany)
Eligibiility:
Parent, grandparent, or great-grandparent was a Lithuanian citizen before June 15, 1940
Or parent, grandparent, or great-grandparent lost ciitzenship due to emigration after 1990
Requirements:
Documentation: birth/marriage/death certificates, proof of ancestor's citizenship, emigration records, and any supporting archival documents
No residence requirement
No language requirement
Sources:
https://www.migracija.lt/web/certificate-of-lithuanian-descent → (Migration Department, Ministry of the Interior – Certificate of Lithuanian Descent and simplified path to citizenship)
Eligibiility:
Parent, grandparent, or great-grandparent was a Polish citizen, without voluntary renunciation
Requirements:
Documentation: birth/marriage/death certificates, as well as any other documents proving ancestor's Polish citizenship
No residence requirement
No language requirement
Sources:
https://www.gov.pl/web/mswia-en/apply-to-be-recognised-as-a-polish-citizen → (Ministry of the Interior and Administration – Information on recognition of Polish citizenship by descent)
Eligibiility:
Parents, grandparents, or great-grandparents of Croatian citizens
Unbroken chain of Croatian citizenship from ancestor to the applicant, with no voluntary renunciation of Croatian citizenship
Requirements:
Documentation: birth/marriage/death certificates, proof of ancestors' Croatian citizenship
No residence requirement
No language requirement
Sources:
https://mup.gov.hr/uzg-citizenship-31976/31976 → (Ministry of the Interior – Regulations on acquisition of Croatian citizenship by descent for emigrants and their descendants)
Eligibiility:
Parent, grandparent, or further ancestors were Romanian citizens
No voluntary renunciation of Romanian citizenship
Requirements:
Documentation: birth/marriage/death certificates, proof of ancestor's Romanian citizenship
No residence requirement
No language requirement
Sources:
https://www.mae.ro/en/node/20117 → (Romanian Ministry of Foreign Affairs – Nationality and Citizenship Policy)
Eligibiility:
At least one parent was an Estonian citizen, without renunciation of Estonian citizenship
Requirements:
Documentation: birth certificates, proof of parent's Estonian citizenship
No residence requirement
No language requirement
Sources:
https://www.politsei.ee/en/citizenship → (Estonian Police and Border Guard Board – Official citizenship guidance, including citizenship by birth and descent)