u/Fionnbharrthedog

I am the child of two Irish citizens born on the island. Some of my siblings were born on the island but I was not. I gained citizenship through my parents and had a passport before my child was born. Does my child have to register on the FBR to get citizenship through grandparents or are they able to apply through me as I was a citizen before they were born? They were not born in Ireand.