In John McFall's baptismal record on rootsireland.ie, it notes that his parents were John McFall and Ann McCormack. They would be your gg-grandparents.

Name:John Mcfall:

Date of Baptism:13-Jan-1867

Address:Drummuck    Parish/District:RASHARKIN

Gender:Male    CountyCo. Antrim

Denomination:Roman Catholic

Father:John Mcfall  Mother:Ann Mccormack

Occupation:

Sponsor 1 /Informant 1:Daniel Mchenry

Sponsor 2 /
Informant 2:Rose Mccormack

Notes:

REV H MCCANN.

Your John had a brother, Daniel:

Name:Daniel Mcfall

  Date of Baptism:20-Mar-1869

Address:Drummuck

Parish/District:RASHARKIN

Gender:Male

CountyCo. Antrim

Denomination:Roman Catholic

Father:John Mcfall

Mother:Ann Mccormack

Occupation:

Sponsor 1 /
Informant 1:John Mckiernan
Sponsor 2 /
Informant 2:Ellen Steel

Notes:

In 1862 in Griffith's Valuation of Antrim, there was one John McFall listed as head of household in Drummuck:

You can see more info at askaboutireland.ie, including maps.

Griffiths lists an Ellen McCormick on plot 9 in Drumack. She had 8.5 acres. Probably a widow. I think that’s probably Ann McCormack’s mother. She died in 1871 aged 78. Informant looks to have been another Ellen McCormack. A daughter I would guess.

https://civilrecords.irishgenealogy.ie/churchrecords/images/deaths_returns/deaths_1871/020759/7282762.pdf

Here’s Ellen McCormick junior in the 1901 census. Note her widowed sister Ann McFall living with her. Seems to connect the 2 families together nicely.

http://www.census.nationalarchives.ie/pages/1901/Antrim/Killoquin_North/Drumack/946588/

Ellen/Elenor McCormick was listed in the tithe applotment records for 1834, suggesting her hsuband was dead then.

https://www.irishgenealogyhub.com/antrim/tithe-applotments/rasharkin-parish.php

Part of the 1851 census of Rasharkin has survived. Sadly it doesn’t include the townland of Drumack.

Thank you all for your information and efforts.  However I believe that the Ellen McCormack is not related to Ann or Rose McCormack who are my ancestors.