I'm descended from James and Abigail's daughter Hannah Matilda (1840-1906), who married David Wheeler White (1834-1879)in Fountain County, Indiana on 15 September 1858. Hannah died in Newton County, Missouri, and is buried in the Saginaw Cemetery.
Off the top of my head, I can't recall finding anything on James' demise. However, my files are currently in transit from the U.S. to Finland, where I now live. When they arrive, I'll see what I have and send it along to you.