Susan,
I've posted quite a bit of information on the web in regard to the Rinz/Rintz/Rentz/Ryntz family. On what web site did you find the Rinz family records, it's possible they were submitted by me- I answer all emails that make their way to me.
I have very little information on Mathias Ceynowa.
Contact me direct at
sissyrz@aol.comSusan Ryntz