Thank you Kerry, I have to say I think it looks like Judith was 13 when James was born.Perhaps she was working as a servant for the Ashburnham Earls. These things happened a lot and the 4th Earl (Bertram) would have been about 17 at the time.
Judith and brother Charles are accounted for but I am still trying to find out what happened to Rebekah born in 1813.If she married at usual age, then it's before civil reg, so won't get a marriage cert.
thanks again, fishytales