Records only go to 1922 for Northern Ireland
I looked at all the Marys. So how do you find anything after 1922?
GRONI (General Register Office Northern Ireland) is the only repository for birth, death and marriage records in what is now Northern Ireland, from 1st January 1922 onwards.
Data protection legislation in NI states that if you are using the internet to search the register, some of the records in GRONI will not be available to view.
Births from 1864 to 100 years ago (i.e. current day 1920 in 2020)
Marriages from 1845 (1864 for RC marriages) to 75 years ago (i.e. current day 1945 in 2020)
Deaths from 1864 to 50 years ago (i.e. current day 1970 in 2020)
You can register on GRONI (free) then purchase a few credits to do full searches, view certificates, etc.
https://geni.nidirect.gov.uk/It costs £2.50 (sterling) to a view a certificate.
KG
Added:
Have a look at...
https://www.nidirect.gov.uk/contacts/contacts-az/general-register-office-northern-ireland