Please stop this diletantism, both of you. You obviously do not have enough knowledge, the fact that YOU cannot find the primary sources, is no proof for anything. Just copy down what secondary souces claim and do not destroy this article even more; it is a huge mess already now. As for the appanage system: actually the principality of Nitra was far more than that, under Svatopluk it was more or less an independent state, but probably a vasal to Moravia. A good proof are papal letters addressed to this region, which the pope writes to Rastislav, Svatoluk and Kocel, treating them as three equal rulers. There are many such subtle things you just cannot know, especially when I look at the sources stated in the article which are mostly outdated and not the primary scholarly books that should be used nowadays. So please just stop these ridiculous guesses, speculations, fillings of gaps (which are your personal gaps as a result of lacking knowledge) and original research. The article has no value in this form, it would make more sense to make it much shorter, if you are unable to acquire and cite the relevant sources.