The Anne B. Klein Genealogy Search

I am doing research mostly on my mother's side, McConnell and Hull. Her grandfather was Dr. John Dawson McConnell who was editor of Vicksburg Sentinal newspaper in Mississippi and then became a doctor in the town of Brownsville where he married for the second time Mrs. Mary Mason Davis Martin, whose first husband was Robert Martin. Dr. McConnell came from Indiana but my search is stuck in Mississippi. Where is he buried, with her family? Related lines are Tarpley, Hull, Herndon. Any help apprecriated and info exchanged.