Hi there Glenda,
I have had a similar thing happen to me with my searches. I found a very interesting website that shows the county formations.
http://www.mymississippigenealogy.com/ms_maps.htm

They point out that Sumner County was renamed Webster County in 1882. However, when Sumner County was formed in 1874, it was formed from portions of Choctaw and Montgomery Counties.

I have other information on my website: Wooden Seeds
http://freepages.genealogy.rootsweb.com/~mississippiwoods/in...