I have Sarah Cutler as being born in 1720 from the census records at Family Search.
Not from a census ... the first census available to us is 1841 by which time she would have been quite old.
The IGI (International Genealogical Index) is to be found on the Family Search website.
It contains some records which are
extracted (copied) from parish registers and, generally, are reliable.
Some records are
submitted "by a member of the LDS Church" and range in worth from "100% reliable" to "100% fabricated".
You've said yourself that your "facts" involve someone giving birth aged 56, so perhaps your starting point for this person is unreliable. Finding something on the internet and accepting it as fact will get you all sorts of problems.
Instead of grabbing at the first "fact" you come across, read through this thread and see if the things we have found could actually be correct. Unfortunately, although I refer to a 1753 marriage, the Scamblesby marriage register which is online begins at 1754 so I cannot substantiate this fact.

The Sarah WEATHERHOG baptism you are disputing was actually 1732, not 1723.
