Yes, Samuel is credited with founding Brookhaven, but there is an interesting story with it:
In 1818 Samuel bought a piece of land in western Lawrence county along the Bogue Chitto river. he soon made a settlement that he named Brookhaven named after his hometown in Long Island NY. His brother "Col. Brewster" joined him there and bought adjoining property with Samuel.
In the mid-1830s many mississippians made the ill-fated investment in the Mississippi Union Bank which lead to finiancial ruin to many people. Samuel was one of them, he had place a lien on all his property to purchase shares. He managed to hold on though..
Later in the 1850s the Railroad had surveyed a route that would lay track across "Col. Brewster's" property. He refused, and the Railroad rerouted about a mile to the east across the Whitworth property. After the track was laid local residents quickly moved to this new location taking the name Brookhaven with them and depleting the old settlement that was then called Jaynesville? I think..
Anyway Samuel died in 1861 and the banks took the property from his widow Mary in 1862..
There are county records also on a Anselm Jayne?
I also remember seing a Brewster Jayne That was a probate Judge in Simpson County is the a son?