Hi Stewarty
I cant help with Adam & Ellen. But I was able to look at the records of marriage in First Derry Church for George. It reads --
Monday January 27th - 1845
'Married in her fathers house Richmond Street, at ???o'clock am George Stewart son of William Stewart Artillery Lane to Mary Jane Laughlin, daughter of John Laughlin- Music Teacher, in the presense of John McCay, Janet Hunter and many other. By Rev. McClure '.
I have checked the baptisms but couldn't find anything directly related to them.
Only baptism records of the children of Isobella Laughlin & Archibald McCay also of Richmond Street.
Sorry this isnt more helpful. S