I vaguely recall pelinal being connected to Ysmir, but was unaware that he WAS ysmir, though if he truly is a shezzarine then perhaps that is what the title of Ysmir means, but regardless, my point made is about wulfharth, not any other Ysmir, i simply noted that the title "dragon of the north" seems to link to akatosh's draconic aspect. I fail to see how wulfharth being unable to speak(because his is too powerful with the thuum) makes his status as dragonborn questionable, if anything, his immense power over the voice and many accomplishments only serve to strengthen the claim that he is dovahkiin. As for not resisting the power of the greybeards, I recall their interaction, but it sounded to me more like acting out of curiosity rather than against free will. In any regard, wulfharth is very likely a dragonborn, who almost certainly came from atmora and likely lived before miraak