Hi Monica. Thank you for your interest as well.
I have one or two long threads about Margaret and her husband, Patrick Tierney. Thanks to RootsChatters, I do have quite a bit of information about them (which is why I am finally writing a "biography" - written as if Mr. Tierney might have written it years ago). I would like to put it in a story form, for any family that might eventually be interested in the couple.
Margaret's age on the certificate is 35 and she and Patrick Tierney were living at the same address: 22 Blackness St, Dundee. I believe somewhere along the line there also was reference to 22 Blackness Road. One of the other threads contained information about a Michael and Elizabeth Clark(e) who lived just down the road from Margaret and Tierney. I can post the threads, if anyone would like to see them.
They were in New York by 1870 and I believe they sailed two months after their wedding. The 1870 census stated she was age 35. She apparently was about 4 years older than her husband. There is always a possibility that she could have been more than 4 years older (you know how some couples made themselves closer in age to each other).
Sadly, Margaret passed away in 1878. Thank you again for your interest.
PS You posted before I finished typing.