scientials:
I'm glad I kept searching. I think the issue is that in the Irish records the surname was McGivney instead of Gibney.
See the second record on this page which has the 1885 marriage of Bridget McGivney to John Lennon. Bridget was living in Creevy and her father was Thomas. She was listed as 30 but likely older.
https://civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1885/10860/5965515.pdf
The baptismal records for Abbeylara parish start in July 1854 https://registers.nli.ie/parishes/0139 so when I searched on the subscription site Roots Ireland, I located three records for children of Thomas McGivney and Anne Smyth: Elizabeth 1855 Ann 1857 Thomas 1860 Bridget and the other children you mentioned must have been born before July 1854.
So ignore the John Gibney/Ann Smith information. I think we have the correct family now.
Roger