Hello jkg0679,
James McKillop and Margaret "Lesley" were married on April 16, 1854, according to their marriage record found at the fee National Library of Ireland website for the Catholic Parish of Armoy, County Antrim. The marriage record is attached to this reply.
The handwriting can be a challenge to read. The image of the marriage record is also blurry.
One of the witnesses to the marriage looks like Nancy McKillop, who may have been James's sister, as your "Descendants of Patrick McKillop
Generation 1" chart, shows that James's sister Nancy was born in August of 1837.
There is also a second witness to the marriage, whose last name I could not accurately read because of the blurred image.
The National Library of Ireland holds the Armoy Catholic Parish baptisms beginning on 23 April 1848, and marriages beginning on 18 May 1848. See the following link which also shows a Catholic Parish map of Armoy and surrounding Catholic parishes, including Loughguile, just to the south of the Armoy Parish, and Ballymoney immediately to the west of the Armoy Parish: https://registers.nli.ie/parishes/0386?locale=en
The "Generation 2" section of your Descendants of Patrick McKillop chart shows that James and Margaret had twins, Mary and Patrick McKillop, born on 29 December 1854. I also uncovered a copy of the original baptism records for the twins in the Armoy Parish registers. I can send you the baptisms if you do not have a copy of the original.
Best Wishes,
Dave Boylan
