I traced the available records as far as I can, and there is an important correction to make: I can document Ludovicus Lagasse's birth, but I cannot yet document a reliable descendant line from him. I don't want to invent a wife or children based on an online tree.

Your chart identifies:

Ludovicus (Louis) Lagasse

• Born: 18 June 1705
• Place: Altenstadt, near Wissembourg, Bas-Rhin, Alsace, France
• Father: Pierre/Petrus Lagasse
• Mother: your chart identifies Jeanne Bertrand as his mother.

The June 18, 1705 birth/baptism is independently reported in a recent genealogy research discussion, which also says the record was found in the FamilySearch collection for Altenstadt. The researcher specifically identifies the father as Petrus (Pierre) LAGASSE.

However, the online evidence I can currently access doesn't give me Ludovicus's marriage, death, or children.

There is another Lagasse family that we need to keep separate

This is where our earlier research becomes particularly important.

A substantial genealogy database has:

Michel LAGASSE

d. 16 March 1698, Altenstadt-Wissembourg

with children:

• Jean Lagasse, born before 1686, died 20 May 1747
• Claudius Lagasse, died 12 May 1728