Teltsch family name for jewish people,which is identical with the name of a city in Moravia,could also be a corruption from or a code for Tew'eltshe,the ethnonym of royal family after Babylónian captivity and return to the Holy Land of America about 583 b.c. from their ancestor She'a-Let-Tewa'el son of Awak-ke-na-wa-ha son of Awa-Haya-Wa-Kawa-Me - that is of Nacoxoc from México,king of tolteca.
Jews and christians call them She'alti'el,Yekonyah and Yehoyakim.
See Deucht,Deutsch,Buharin,Ascher and others !
Balázs Déri's decided view