The Company takes its name from General James Longstreet, Who served in the US Army from 1842-1861 and in the CSA from 1861-1865.
Here is a link to his Wikipedia page James Longstreet
The founder of Longstreet Financial is the great great nephew of the General.
Even with the current state of affairs regarding confederates, a quick read of the wiki will confirm he stands as an american hero, being pardoned specifically by congress and lifelong best friend of Ulysses Grant (and may have been best man at the wedding, even).
James Longstreet’s Autobiography, From Manassas to Appomattox is a must read for any historian.