Do you have any known dates for them? My GGrandfather was Charles Schneider. I don't even know if he had any siblings! It seems he may have been married twice. First to a Caroline Baker Meatz, or something like that according to baptism records. They were marred 1865 in New Orleans.
He then appears to have married Elizabeth Hammell in 1874. Of which my Grandfather (b1879) was a result of, and I don't know if they had any other children.
My Grandfather was Martin Schneider, b1879 in either New Orleans or Bay St. Louis, Ms. Martin was married in 1909 to Angeline LucdeGuerry of Bay St. Louis, Ms. at Our Lady of the Gulf Church. Martin Angeline had 3 children, but raised only 2 to adulthood. There was my Father, Charles Mitchell Schneider, born 1910 and Martin Schneider, Jr., born 1924.
Martin, Sr. may have had a 1/2 sister born of the first marriage of Charles to Caroline Baker Meautz. Her name was Magdalena Schneider born 1869 in New Orleans. Magdalena married Alexander E. Damborino in 1894 in Bay St. Louis, Ms.
Apparently my information is as vague as yours appears to be. I am having a very difficult time tracing Schneider lines in general. There just seem to be so many of them. Know what I mean..
Anyhow, your names are not familar but I'll keep a lookout. Let me know the dates also.
Bye for now,