Hi Marimac,
Do you have the details from Jackson's and Jane's marriage cert? My suspicion is that it may be a second marriage to my Jackson. Unfortunately I don't know who his first marriage was to! My 3 x great gramps Jackson had sons between 1831 and 1836, and as your Jackson married in 1864 that is the basis of my hypothesis, which is as thin as it gets really!
What became of Jackson and Jane, where did they settle, and did they have many kids? I know my Jackson had a son called Jackson who married Nancy Harris in 1853. He had kids until at least 1876, which is why I don't think at present that is the same as the one who married Jane Orr. Perhaps a cousin?
When I first found my Jackson Curry, I was delighted, thinking it such an unusual name that it should be easily traceable. Unusual outside Derry just!

Chris