One of the best resources for Jewish Genealogy research may be found at

http://www.jewishgen.org/

Translated from an article on the net

"The Jews at Gloggonitz, not far from Neunkirchen, in 1873 built a synagogue at Haupstrasse 23. (23 Main St?)

http://www.ashkenazhouse.org/osterreich/n17.html

Robert