Yes that is what he is called, but I think it's more of a title than a name. When Oryx was first Aurash, no title, then Auryx, still no title, then he became Oryx, The Taken King. Lineage seems to be really important with the Hive, and it doesn't make sense for Oryx to have two heirs. Crota is his heir, but what does that make of Nokris? If he isn't an heir then just another son? But what of his daughters - are females not important? But his sisters lead Hive too.. I'm not saying Nokris [i]is[/i] his das for sure, I'm just present another possiblity. Another perspective.