In my records I have an Alphonse Matherne, b. Cir. 1878 in Lafourche Psh, LA, the son of Francois Gustave & Augustine Badeaux. He married Marie Orgeron, the d/o Charles & Evelina Landry, 11 Oct 1900 at the Larose Church. They had at least a daughter Marie Emma Matherne, b. 23 Aug 1901 at Montegut, Terrebonne, LA. If this strikes a chord, email me, for I can connect him to Johann Adam Matherne.