Ah yes. Some of those get regularly shown on German TV, though I sadly haven`t seen any of them yet. 
But in West Germany there were also some Westerns with a similar topic. I think it might even be possible that east Germany started to copy this formula after the success of Winnetou (1963). Gojko Mitic who came to be a huge star in East Germany and the main choice for the indian protagonist that features in many DEFA films, also appeared in some early GDR films. 
Winnetou and its dozen spin-offs always had Pierre Briece as the noble savage who is trying to save his tribe from various dangers. In some of the films Lex Barker (he from the Tarzan fame) plays his "sidekick". 

Some of those West German westerns are actually watchable, and I can recommend two films which was a childhood favorite, and which I still found pretty good two years ago. Though they are also very corny, my experience was much like watching an Indiana Jones flick. Der Schatz der Azteken ("The Treasure of the Aztecs") and Die Pyramide des Sonnengottes ("Pyramid of the Sun God") are two of the last films Robert Siodmak made after returning to Germany. They were both shot at the same time (about 1965) and care actually one film that was split in two because of its length - much like Kill Bill. It could have also been planned like this, because it wasn`t uncommon for these kind of european co-produced Blockbusters to stretch a film into a series (Winnetou was followed by two sequels). Maybe you can get hold of a copy, but my advice is not to watch an edited version (the original is ca. 200 minutes), and going in without expecting a John Ford. 

I`ll write something if I catch any of those (East or Wes), but I have a feeling that you will be faster.