I do not think you need all those things.I am hoping to do the same.
I have been held up by the fact they couldnt find my Grandmother,s birth and no wonder as the kind folk on here found that the name had been wrongly transcribed at time of registration.
If you have a grandpparent born in Ireland then you need that grandparent's birth and marriage certs( obtained from Roscommon GRO. You will find application form on theiir site.
You do not need your gt grandparents details.
Your grandmother,s baptism you do not need if she was born after birth registration became compulsory.
Shhould you wish to find it many parish records are
Give name and date of birth or baptism and parents names and they will find you the record and send you a copy. If they cannot find it they will refund your money.
Then you need the grandparent,s marriage cert again from same place. Then you need your own birth and marriage cert.
You then follow instructions and send all to the address given together with payment requested.
If your mother or father were born in Ireland then it is much easier.
Certs are 20euros each from GRo roscommon .you need full copies.
Good Luck.
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