Are you looking more for information on the Texas Wiley or the Georgia Wiley?
I have been researching the Texas Wiley and would love to swap info with you.

I found the newspaper record that announces the death of Wiley's first wife and a website that listed his marriage to his second wife, Martha, only a month after Sarah's death.

Sarah's death: http://dlg.galileo.usg.edu/milledgeville/id:fuw1854-0047
Marriage to Martha: http://freepages.genealogy.rootsweb.ancestry.com/~polkcountytxconnections/MariageBookB.html