This may be of little benefit to you but you may be able to link something up and help me at the same time.
I have Rider/Ryder families from around that area of Cambridgeshire & Essex. There is a Shandra Rider m Ann Livermore on 14 April Little Chesterford he is somewhat of my brickwall have you come across this family or marriage?

What I have found is William Livermore m Anne Pledger 28 Oct 1725 Little Chesterford the parents of Ann she was baptised St Mary's Little Chesterford April 1735 they also had a daughter Elizabeth baptised 2 May 1731.
It is probable that there were more children.

William Livermore was baptised 16 February 1703 Chesterford son of Robert Livermore and Elizabeth. I have not done any real research on this family but it appears that there was a son John.

I did notice on Family Search a number of entries by a member of LDS.

My problems are (1) I have no contact with that member so can't confirm or access information.
(2) Being in Australia I don't have any appreciation of the likely movements between these villages, from my Rider research it seems to be reasonably common.