Hi Valerie,
How exciting to hear of your Irish ancestry!
Family history research can certainly be tricky at times, especially with gaps in the paper trail and oral history.
I've an interesting bit of information though, regarding your Annis/Nancy question. Etymology tells us Nancy was previously a medieval diminutive of Annis, though since the 18th century it has been a diminutive of Anne!
There is a previous community post on
Helpful Research Tips that has some excellent information on places to check for records. Current records for the Republic of Ireland have been kept at the
General Register Office of Ireland (GRO), to this day. For Northern Ireland, people born or lived in Northern Ireland after 1921, then their records would be with
General Register Office of Northern Ireland (GRONI).
We wish you all the best with your search and hopefully, some of our community members may also be able to help you.
Best wishes