Michael McCormick marriage to Mary Orr or Auld

[aghadowey]

You could be correct, Neale1961, but OP gave children as Agnes (c1836) and Mary (c1838) 

Oops- pressed post button too soon.
However, both 1841 and 1851 census records indicate Agnes was older than Mary.

[Neale1961]

Looking at baptism record is recommended.

[aghadowey]

There are Roman Catholic baptism records for Mary 1834,  Jane 1843, and Sarah 1847 (all Glasgow) available from Scotlands People. What names are given for sponsors?
Mother’s name varies  ORR / AULD / AULT

Hopefully OP will have a look at them if they haven't done so already although from previous posts it's hard to figure out what they have seen/know that they haven't posted.

[shanreagh]

Earlier thread on Michael's parents say OP has Michael's death certificate-
https://www.rootschat.com/forum/index.php?topic=797433.msg6544699#msg6544699

Another point regarding the names- Helen and Ellen will be used interchangeably but Ellen much more common in Ireland than Helen. Often an Ellen from Ireland will be known as Helen once in Scotland.
Agnes, Nancy, Ann(e) and sometimes Hannah all interchangeable.

Orr is a common surname in Ulster but Auld less so.

One thing I didn't notice mentioned yet is the family's religion.

I think I was a bit loose with my Orr/Auld.  I have Orr's somewhere in my links, around Ballymoney I think, and I have seen them recorded as Auld.  Aside from a couple of times seeing them as Auld I usually record them as Orr.

[aghadowey]

I think I was a bit loose with my Orr/Auld.  I have Orr's somewhere in my links, around Ballymoney I think, and I have seen them recorded as Auld.  Aside from a couple of times seeing them as Auld I usually record them as Orr.

There are Orr headstones in St. Patrick's Parish Church [COI] and the old graveyard across from it but nothing for Auld.