I have Schneiders & Walissers (note the double "s" instead of the "z") in my tree as well, but not specifically your family. Where did your family live? My Schneiders emigrated to the US (mostly Kansas) from the Volga region in Russia in the early 1900s, and then some continued on to northern Alberta. If this sounds like this might connect with your family, let me know. I have an extensive Schneider tree and might be able to help connect the dots somewhere ....
Happy hunting!
:)