If you want to earn citizenship through ancestry, please visit the Department of Foreign Affairs and Trade
To qualify, you’ll need to prove that you’re the child or grandchild of Irish citizens. The first step in the application process is to register your foreign birth with the Foreign Births Registry. To register with the Foreign Births Registry, you’ll have to include passport-sized photos with your application. You’ll also need to sign and date your application yourself, as well as have the signature of a witness.
The Department of Foreign Affairs and Trade has an easy and digestible guide to follow for each step of the process.
Let me know if you have any other questions.