"Albino Zuech and Marie Ann Schweigert"
i know the name Zuech specially for the Trentino-Alto Adige in South-Tyrol,Italy. it was before 1919 austrian. there are the provinces Bolzano(South-Tyrol/Südtirol), which is more german-lingual on border to present Austria (it was separeted from North-Tyrol)and south of it province Trento (Trentino). you can look at www.ellisisland.org
and you find many Zuech from there (Brez) many emigrated to work in mines like Colorado and so on. maybe your ancestors have the roots also there. a possibility....http://members.fortunecity.com/reisenge/TIROL/land/tkarte_h....http://en.wikipedia.org/wiki/Trentino-Alto_Adige/S%C3%BCdtir...http://www.trentinoheritage.com/draft.htmhttp://www.trentinoheritage.com/
Brez in the Val di Non(Non-valley):http://www.science.unitn.it/~iori/trentino/valligif/Non.jpghttp://www.science.unitn.it/~iori/trentino/valley/Non.htmlhttp://www.science.unitn.it/~iori/trentino/
both lastnames are not italian, they have german orgin. i don´t think that they were jewish!
italian phonebook has 85 hits for Zuech: http://www.infobel.com/en/world/Teldir.aspx?Ct=Europe&Co...
Schweigert is more of Germany directly, specially from Bavaria, which borders on Tyrol and the dialect is similar to the tyrolean! - phonebook has 917 hits: http://www.dastelefonbuch.de/
the firstname Albino would also fit with the italian-lingual province Trento.
Usage: Italian, Portuguese, Portuguese (Brazilian), Spanish
many info, but think there can be really a connection....