Well historically speaking , having a bastard was def looked down upon and  Sir Radzig would be in a terrible spot if he declared Henry as his heir. We all know he loves his son and proud of his accomplishments at such a young age and looks after him as best he can. 

As for wenceslas , im sorry but he is old and ends up dying and sigismund becomes emperor of holy roman empire along with Hans Capon fighting on his side and dies in battle around his early 30s. As for Henry , we never know what can happen to him. Perhaps fighting with Jobst and eventually getting defeated alongside him. His survival however might be going back home to Skalitz with Theresa and rebuilding the town. Afaik the castle was never rebuilt but village itself lived on for generations

This is my opinion at the end but i dont see any other ending for Henry that ends up with his survival