Paul Bouet Laffitte was born in Pouyroquelaure, Gascony, France on March 4, 1746, to Francois Jean Bouet and Marie de Laffitte. He came to Louisiana in 1764 and eventually settled in the Bayou Pierre area of DeSoto Parish. He was prominent in local affairs and a respected trader with the Yatasi and other Caddo Indian groups in northwest Louisiana and northeast Texas.
Laffitte established a cattle ranch in the Dolet Hills region of present-day DeSoto Parish and was appointed a Justice in the Bayou Pierre settlement by the Spanish. In 1770, he married Marie Magdeleine Grappe (1754-1781) of French and Chitimacha Indian descent.
Although contemporaries, their eldest sons, Pierre and Jean Laffite were not related to the pirates Pierre and Jean Laffite of Barataria fame. In 1782, Paul Bouet Laffitte married Eulalie Marie Anne de Soto (1763-1833) of French and Spanish descent and granddaughter of Louis Juchereau de St. Denis, founder of Natchitoches.
Paul Bouet Laffitte’s name disappears from local records after 1815 with the date and place of his death unknown. ref-DeSoto Parish Historical & Genealogical Society [http://www.claitors.com/veach/cajunsv4n19.htm]
I think on Geni.com a few thought they were related?
