Mothers name came from upload. 16:38: Tom Rhodes imported the data for Mary Elizabeth (Sidwell) Abraham (bef.1690-1747)
Mothers name comes from marriage record which is sourced on mohters and fathers profiles https://www.wikitree.com/wiki/Abraham-306
There is also a partial record that apparently came from the Cromwell researcher, I am unable to trace back to the person who originally shared all of the research documentation. https://www.ancestry.com/mediaui-viewer/collection/1030/tree/86247368/person/46565078292/media/98e5ed30-c5cf-478b-b0e7-b2254ac3a8bf?_phsrc=gIE12606&key=Uhttps:%2F%2Fwww.ancestry.com%2Fmediaui-viewer%2Fcollection%2F1030%2Ftree%2F86247368%2Fperson%2F46565078292%2Fmedia%2F98e5ed30-c5cf-478b-b0e7-b2254ac3a8bf%3F_phsrc%3DgIE12606&usePUBJs=true&clickref=1011lbd59UFx,1011lbd59UFx&adref=&o_xid=01011l4xx5&o_lid=01011l4xx5&o_sch=Affiliate%20External
Just when you think you have it all figured out...I just got a new hint for Henry the Grandfather which would indicate he was married to Sidwell Richards rather than Marha Eva Sidwell:
An uploaded and unsourced gedcom is not a sufficient source. We need to find better source for the identification of the mother.
The marriage source on the attached father's profile only offers a surname of "Abraham" for the groom and "Sidwell" as the first name of the bride. That second doesn't seem right. It's an index. Ideally, we find the original to see what it actually says. If the last link you provided is the original, all we see is the surname Abraham. Nothing else is legible.