Yes I am - thank you for sending that over. I was hoping to get an age and mother's name. I've seen that recorded in other church marriage records.
Also, I didn't realize Ardnaree was a rural area - I thought that townland was near Ballina?
On the marriage certificate the witnesses are pretty clearly named. Have you searched for them? Just in case they lead you to a birth and a possible mother's name.
Another way to possibly find, or at least narrow down, what a mother's name might be is to look at the traditional Irish naming patterns.
Traditional Naming Pattern
A traditional naming pattern was often used by Irish parents until the later 19th century:
First son usually named for the father's father
Second son usually named for the mother's father
Third son usually named for the father
Fourth son usually named for the father's eldest brother
Fifth son usually named for the mother's eldest brother
First daughter usually named for the mother's mother
Second daughter usually named for the father's mother
Third daughter usually named for the mother
Fourth daughter usually named for the mother's eldest sister
Fifth daughter usually named for the father's eldest sister.
Here is a link to Ardnaree townland
https://www.townlands.ie/mayo/tireragh/kilmoremoy/ardnaree-or-shanaghy/