I think it would be better if someone came up with an exact proof of whether these two noblemen were truly of Slavic ancestry and not just having property in a territory (of highly diverse ethnic composition) that was later to become Slovakia? As for Nitra, it was indeed an ancient Slavic Christian center in the Moravian Empire but I fail to see its relevance in an article about St. Stephen. The questions of Slovak ethnogenesis (national identity) is a bit complicated, with conflicting theories about that would go beyond the scope of this article.