According to Hanno Diler's book titled, 'Settlement of German Coast of Louisiana and Creoles of German Descent', Johann George Troxler is thought to be progenitor of all Troxler and Trosclair families in Louisiana.

The above information was obtained from the 1724 St. Charles Parish, Louisiana census.
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About Johann Georg Troxler

Johann Georg Troxler, of Lichtenberg in Alsace. Catholic; 26 years old. A mason. His wife. "Fort bon travailleur". Two and one-half arpents cleared, on which he has been only since - the beginning of the year having left the village in the rear. Exposed to inundation. Absent because of bad health. His wife is also sick. Lost his crop and his house. A neighbor, who cooked in a shed attached to Troxler’s house, accidentally set fire to it. 1731: Two children. Two negroes; one cow. Johann Georg Troxler was the progenitor of all the "Troxler" and "Trosclair" families in Louisiana.

The above paragraph was taken from the 1724 Census in St.Charles Parish, Louisiana.

Phalsbourg (German language: Pfalzburg) is a town in Moselle, (Lorraine), France. Its population is about 5000. In 1911, it was a town in the imperial province of Alsace-Lorraine , lying high on the west slopes of the Vosges, 25 miles (40 km) north-west of Strasbourg by rail. In 1911, it contained an Evangelical and a Roman Catholic church, a synagogue and a teachers seminary. Its industries include the manufacture of gloves, straw hats and liqueurs, and also quarrying. The principality of Phalsbourg, of which this town was the capital, originally a part of Luxembourg, afterwards belonged in turn to the bishop of Metz, the bishop of Strasbourg and the duke of Lorraine , and passed into the possession of France in 1661.

According to information provided to the census enumerator in 1724, Johann George TROXLER state that he was born in Listamberg in Alsace. (Source: Archives des Colonies, Series G1, Vol 4 64, non-paginated. The name of the town was spelled phonetically, as no town in Alsace is names "Listamberg.") Four years earlier, Johann Georg TROXLER, son of Jost TROXLER and Barbe Faller, married at Phalsbourg to Marie Madelaine HAUSSER, daughter of deceased Jean Hauser and Anne Catherine Wachtler, resident of Lautenbourg, diocese of Spire (Source: Phalsbourg, Moselle, France (Catholic Church, FHL Microfilm No. 1331670, p. 98) In the text of the act of marriage, it was stated that Johann Georg TROXLER was a native of Lictenberg. (Source: Another Citizen of Lictenberg, Michel JACOB, son of Michel JACOB and Eve REITER, married at Phalsbourg on the same date to Marie Madelaine BECHLER.) The text of the translated document appears below:

"The fourteenth of August 1720, I, the undersigned parish priest of this place, have blessed confirmed and ratified in the view of the church, the legitimate marriage contract between Jean George TROXLER, son of deceased Jost TROXLER and of Barbe FALLER(IN), of Lictenberg, the first party, and Marie Madelain HAUSER(IN), daughter of deceased Jean HAUSER and Anne Catherine WACHTLER(IN), the mother, present of Lautenbourg, Diocese of Spire, the other party, and this with the requisition of Mr. J. HESLER, commissioner and conductor of the said parties to Louisiana, and in the presence of witnesses (Mark of the groom, mark of the bride, illegible signature and FICHER, parish priest of this place)."
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From: Wikitree

Johan George "Jean" Troxler
Born 1698 in Lictenberg, Bas-Rhin, Alsace, Germany
Son of Jost Troxler and Barbe Faller
Brother of Margaretha Troxler
Husband of Marie M. (Hausser) Troxler — married August 14, 1720 [location unknown]
Husband of Marie (Mary) Agnes Loy-Laite — married January 1738 in Des Allemands, Lafourche, Louisiana, United States
Father of Marie A. (Troxler) Savant, Jean-Nicolas Troxler, Anne Marie Troxler, Marie Agnes Troxler, Anne Marguerite Troxler, Jean Baptiste Troxler, Jean Jacques Troxler, Christophe Jean (Christian) Troxler, Charlotte Troxler, Catherine Troxler and Margarethe Troxler
Died November 17, 1759 in Des Allemands, St. Charles Parish, LA
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Johann George Troxler Circa 1722

He came to LA in 1721 on one of Three(3) ships, St Andre, Ladurance or Portefax. Settled on the German Coast of LA. This Village named Hoffen, was located 25 miles above New Orleans on the right bank of the mississippi river. he was Catholic and 25 years old, he was also a mason and was married at the time.
• Passenger and Immigration Lists Index, 1500s-1900s
• about Johann Georg Troxler
• Name: Johann Georg Troxler
• Year: 1724
• Age: 26
• Estimated Birth Year: abt 1698
• Place: Louisiana
• Family Members: With wife
• Source Publication Code: 1497.15
• Primary Immigrant: Troxler, Johann Georg
• Annotation: Date and port of arrival, date and place of census, or date and place of mention in the New World. Exhaustive historical and genealogical information is also provided.
• Source Bibliography: DEILER, J. HANNO. The Settlement of the German Coast of Louisiana and the Creoles of German Descent. Baltimore, MD: Clearfield Co., Inc., 1998. 154p.
• Page: 80

Marriage to Marie Madelaine Hausserman
• 1720 14 Aug — Age: 22
• Phalsbourg, Moselle, Lorraine, France
Second Wife: Marie Agnes Laite
Birth Abt 1717 in St Charles, Caddo, Louisiana
Death Apr 1754 in St Charles Parish, Louisiana
Marriage Information
Date
Abt 1737
Location
Little red church, St Charles Parrish, Louisiana
to Johann George Troxler
Death 1754
Apr— Age: 37
St Charles Parish, Louisiana