In looking through my records, I don't find any Louis's but I'll give you what I have.Some is from acadian.org, but at this point I have gotten so much information from so many places, I honestly have trouble keeping track of what I got from where so here goes.
Henri Frederic Duperier, born September 11, 1802 in Philadelphia, PA (confirmed by 1900 census for his son), married July 7, 1825 in St. Martinville, Attakapas, LA to Marie Hortense Berard.He died march 15, 1839 in New Iberia, LA.
His parents were Pierre Dumouvier Duperier and Eleonore Laugier.The family story is that they were wealthy medium-sized sugar plantation owners in Haiti/Santo Domingue.They had their son H.F. in Philadelphia.When they returned to their plantation intending to sell it, they were caught up in the slave uprising under Toulouse Lautrec and were killed.H.F. either escaped or didn't go on the trip and went to Philadelphia with an aunt named Esther Teare.They then moved to Louisiana.I have been unable to confirm any of this.
I know nothing more on Pierre and Eleonore.
Henri Frederic Duperier married Marie Hortense Berard, born August 15, 1807 in St. Martinville, Attakapas, LA per ClifBenoit@msn.com.She died about Mar 21, 1893
Her parents were Achilles Berard and Marie Hortense Boutte.He was born August 28, 1788 in St. Martinville, ST. Martin, LA, married July 02, 1806 in ST. Martin of Tours Catholic Church, ST. Martinsville, LA, and died March 2, 1816 in St. Martinville, LA.She was born Abt 1790 in ST. Martinville, St. Martin, LA and died in 1868.
Achilles Berard's parents were Jean Baptiste Berard and Anne Henriette Broussard.He was born 1737 in Grenoble, Dauphine, France, married 1769 in St. Martinville, and died October 7, 1821 in St. Martinville.She was born 1746 in Pisiquid, Acadie/Nova Scotia, and died November 16, 1820 in St. Martinville.
Marie Hortense Boutte's parents were Francois Cesar/Cezar Boutte and Marie Therese Degruis.He was born 1751 in Mobile, AL, married July 12, 1778 and died September 4, 1827 in St. Martinville.She was born Abt 1757 in New Iberia, LA, and died September 13, 1818 in St. Martinville. M.T. Degruis's parents were Antoine Valentin Verlouin Degruis and Maria Theresa Aufrere.
I have more on Anne Henriette Broussard and also on Francois Cezar Boutte, but I am out of time.As soon as I can, I'll type in the rest.