If I remember correctly, an earlier message on this forum provides a link which can give you the entire SOF genealogy. Also, if you can e-mail me directly at firstname.lastname@example.org, I can see about getting you an invitation to the www.myfamily.com melick web site, which has a lot of info about the Melick family, especially the branch that came through Ohio.
The SOF genealogy is only through about 1889, and there are a number of errors and updates that a lot of us have assembled. If you see a mention of "After The Story" on this forum, it refers to my own assembled updates of the SOF listings. The best way to get you started would be for you to determine who James Greg's parents were, and where they lived, which is why I suggested the death certificate. Either way, when you have that information, let me know and I'll see if I have those names in my listings.