It can all be quite confusing with the various spelling permutations for Duberley. But I think Esther Duberley (b1789) is my 4th-great grand niece. And she was the daugther of John & Betty as indicated elsewhere on this thread.

I hadn't linked in the marriage to Matthews in 1813 but I did have a James Dubberley as her child in 1811 who then married Dinah Buffin and they had a number of chilrden as follows:

Esther b1837
Jane b1839
Elizabeth b1841
James b1845
Thomas James b1847
Sarah Ann b1849
Fanny b1854

I must have another look at the Duberley family tree and see if I can sort out any further information.

Paul