If two or more people have ever occupied the same residence, or have been connected in some way credit-wise, then they will frequently show up lumped together in these type of search sites. Even if they haven’t lived together for years, don’t live together in the current home, or in some cases never lived together...their names are still linked for the purposes of internet searches. Data is collected from a wide range of sources (many companies sell their mailing lists and other information). Try searching for your name on a site such as
www.intelius.com. and see what shows up in the “related to” block. In my case, my spouse’s ex shows up on a search of my name. (*Note: Basic search information on this site is free, more detailed information is fee-based.) There are many sites out there like this.
If you want a more accurate way to see your neighbor’s name (in Sumter County), you can go to the Sumter County Property Appraiser’s site at
http://www.sumterpa.com/Important.asp and click on “Record Search”.