From the records that I have Irwin had 3 sons named James Baton, Henry, and William. I don't know for sure about William's middle name since I don't have that in my records but my records do show a wife named Jane. Her last name isn't known (in what I have). They had 6 children, 3 boys and 3 girls. Their names were Larry, John, George W., Francis, Isaiah, and Marath.
Irwin's father was William Hattaway as I mentioned and his father was Thomas Hattaway Sr. Thomas's father was David Hattaway Sr. The Hattaway's from William back were from Pitt and Halifax county, NC.
I would love to include what you have in my GEDCOM that I've been putting together if you have the line of William (son of Irwin). I've also been talking with a direct descendant of Elisha Hattaway who was the brother of Irwin.