In the 9 1/2 years since the original post, a group of us have done significant research on this family and have confirmed many of the same pieces of information that you have mentioned. Since then, we have confirmed that:
- M. Nehemiah Monroe was Miron/Myron Nehemiah Monroe (see 1880 in the home of his son John S. Monroe - in Michigan). His father and mother are indeed named in his death records.
- While no record has been located to name Ransom's mother, the 1855 census does name his father as Nehemiah. Placing Ransom and the younger Nehemiah next door to one another in 1850, and both naming their father as Nehemiah, AND a land purchase in PA by Nehemiah and wife Anna in the period when Ransom was born, would make it likely that Ransom's mother was also Anna.
- Census records would appear to indicate other siblings with all of the female siblings still unidentified, and one probable male sibling.
We have formed a study group on this family that you may find interesting. We have shared documents, photos, Bible records, journals, and more. We have formed discussions on theories and have shared our research. We have also done DNA research that has confirmed that our Monroe's are of the Lexington Munroes, whose descendants were present at the battle of Lexington and Concord. Although we have not yet linked the line from the original ancestor to Nehemiah (1785), we do have some good DNA clues to help sort out the various lineages once more descendants have tested their DNA.
I will contact you privately to give you the details and welcome your participation in the group.