Brian - this seems to be the same Eleanor, perhaps she was entered twice by mistake?
1841 Andreas, District 3, p1/2, Craig:
Ellinor Christian 50 Spinner
Ann 20
Ellinor 20 (the one I think is mother of the illegitimate children)
William 10
Edward 8
Jane 7
Ann Cowell 2
I have checked some of the younger children on the IGI and they are children of Daniel Christian and Ellinor Teare, matching the 1851 Eleanor at Ballacorey.
Perhaps John James was the son of John Corlett or a Killey, or maybe he died and was buried in his father's name. I can't find a burial record for him as JJ Christian.
Thanks for your help
Susan