Old Czech (Bohemian) or Moravian

[Jorge_Stolfi]

Do we know for sure that Jacobus de Tepenecz was not able to read the Voynich Manuscript?

We don't know that, of course.  We don't even know for sure whether he did ever own the manuscript.

But we know that Barschius (who was Czech) tried hard to read the manuscript for may years, showed it to other people, etc.  Then Marci (Czech too) held it for a while.  Raphael, who taught Czech to the Emperor or his children, also looked at it.

Everybody who could read Czech surely would be able to read both versions, pre- and post- the ~1410 Hus reform.  My lalamo gives this example:

• Before: Gyzt mne wsse radost ostawa / gyz me wsse vtiechi stanu.
  
• After: Jižť mě všě radost ostává / již mě vše útěchy stánu.
  

All the best, --stolfi

[Ruby Novacna]

I'm not looking for any citation or historical documents.  What I am looking for are living, breathing humans who can read Czech and who have an interest in the Voynich Manuscript.

Try consulting a few works on paleography anyway; it might help.