https://www.irishimmigration.ie/require ... ts/#stamp4
That seems to be the most fitting:
8 ) As you live with and are the dependant of a family member (not listed in this table) who is an Irish citizen.
[...]
First Time Registrations
The biometric page of your current valid passport(s). This is the page that shows your photograph, passport number and date of birth.
The biometric page of your de facto partner’s/ family member’s current valid passport(s).
Proof of your joint current address with your de facto partner/ family member.
Your permission letter from the Department of Justice that details the conditions under which you were granted a Stamp 4 (if applicable).
Private Medical Insurance or Travel Insurance with medical cover for accidents
I'd add a birth certificate copy in your case as well, so you can prove your relationship.
Send them an email (
gnib_dv@garda.ie) and ask about documents needed?
Also i hope you made an appointment already - the sooner, the better, as non-Dublin immigration offices tend to take a long while for IRP to be issued.