Carole Vogel asked about a TZILZT family >from Mattersburg which may have
originated in Prague in the early to mid-1700s.

There are no families of that name in the 1793 census of Bohemia - I have
tried various spellings start with letters S, T and Z.

Please see this well-hidden link for possible origins of the name:

http://www.jewishgen.org/AustriaCzech/beiderindex.htm

Celia Male, London, U.K.