Hi Poppy 10,
I notice you traced a girl in Angus, your ancestor states she was born in Tranent and married there, I found an Isabela Smith who died in Prestonpans 1850 unfortunately it is not her as she was aged 60, Prestonpans is just down the road from Tranent.
I found her marriage on Scotlands People, it seems it was recorded not only in Tranent but also Dunse, the death of Isabella is really hard to find, I gave the option of her living till 100 but the only one to show up was above.
I just wonder if she left home and let William bring up the kids because on the Census returns he is not down as a widower.
Do you live in Scotland.
Cheers.
Archie.