I'm not sure if you got my first post follow-up, but if you did not, here goes again.
I have been doing research since 1982 and found Hannah Burch probably 15 years ago or so. We are cousins as they are my ancestors, as well. Have tons of stuff on James/Hannah and their family. But you are right, there is a brick wall past JMDN.If you want to corroborate, I will be willing to help out in any way and share what I have, and would be interested if you have any info that fills gaps of my own. I've always hoped to find someone else descended from them and want very much to correspond with you and find out where you are in this lineage. Their son John S.B. Nickel is my ancestor. He had brothers and sisters who I know some about, and would like to know more. Please email me. I don't have time at this moment to write more.