Bastrop is more closely associated with Morehouse Parish and Texas, but did interact with Ouachita parish and is an early settler of Colonial Ouachita Parish. The Texas State Historical Association has a great write up on the self-styled “Baron”.
https://www.tshaonline.org/handbook/entries/bastrop-baron-de
Another article about him is found here:
https://www.tshaonline.org/texas-day-by-day/entry/765
64 Parishes has a great article about his time in Louisiana here:
Ouachita Parish History Tidbits 