Preston Family Newcastle-upon-tyne info

[MarshallDescendant]

Hi, hoping someone might be able to shed some info on the family of David and Elizabeth Preston from Newcastle-upon-Tyne beginning circa 1780. I found 3 of their sons on the IGI -- John, David, and James.  All christened in "St Nicholas Close St-United Secession Or Scotch Chnewc", Newcastle Upon Tyne.  James had a son David in 1807 (This would be my gr. gr. grandfather). However I can't find any marriage info for James and there is no mother listed on David's christening record.  Does anyone have access to this parish's records to see if there are any other births, marriages, or deaths for this Preston family?

Any help, info or suggestions would be great -- thanks!

PS: what does the parish name Scotch Chnewc stand for?

[TracyW]

Scotch Church, Newcastle, I think, in Blackett Street (I googled it) which looks like it would fall within the parish area of St Nicholas.