I have been doing research into the Kutschurgan settlements northwest of Odessa in Russia. In the town of Elsass, one of the founding families was Glass. Since I am researching the Kamenz line also in that time, I have done nothing more with the Glass family there. The Kutschurgans have a web page: http://www.kutschurgan.com. There may be help and references for you there. Good luck! Beth Glass