Thomas Jamieson and Ellen Moore marriage record?

Family in 1901 census:

http://www.census.nationalarchives.ie/pages/1901/Tyrone/Newtown_Stewart/Grange_Terrace/1751947/

Family in 1911:

http://www.census.nationalarchives.ie/pages/1911/Tyrone/Newtown_Stewart/Back_Street/848345/

1911 Census indicates they were married 22 years, had had 8 children of whom 7 were still alive. I can’t see a marriage though.

I did see that there’s a marriage in strabane for a Thomas Campbell and Ellen moore and all the details match up except for his surname? there’s no chance that that could possibly be a middle name or something and they’ve accidentally used that as his surname?

Yes I did see that marriage and the same thought went through my mind. Looking at the 1888 Campbell - Moore marriage I see the groom was from Grange.  Also that the eldest Jameson child (Robert Stewart Jameson) was born there too in 1890. So I suspect it’s the same family, with the groom having changed his surname from Campbell to Jameson.

https://civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1890/02419/1901494.pdf

I also searched for children to the Campbell-Moore marriage but did not find any. (That could of course because they had left Ireland, but could also be because of a surname change).

Oh were those children that you sent earlier not the children to the campbell / moore  marriage or am i reading that wrong lol

The childrens names are Jameson on the censuses, so they look to be to the Jameson - Moore couple.  But they may also be the Campbell - Moore couple if Thomas changed his surname for some reason.