Greetings from Sydney also John!
The Burial was on FreeREG
www.freereg.org.ukI dont know all the names of Thomas and Janes children but it may help you narrowing down a possible Bapt for her in other Counties.
I had a quick look at Familysearch.Org
EG;
Jane Clementson (and variants)
1734 Northumberland Father Peter
1735 Northumberland Father Thomas
1737 Cumberland Father William
Interestingly in Stanhope are some burials/bapt/marriages for the surname Cleminson/Clementson from 1763.
(use soundex option)
I personally have a brickwall about the same time in one barnch of my Tree but have left at that as its too hard to confirm without any doubt.
Going back to the early 1700's is fine with me.
Trish
