Board Thread:Lore Discussion/@comment-10993011-20130618024431/@comment-6707115-20130619133844

The Underking wasn't really Zurin Arctus, it was Wulfharth of Atmora. Wulfharth was turned into the Underking when Tiber Septim had Zurin Arctrus and some guards trap Wulfharth in order to suck out the divine part (Lorkhan's part) of his soul so that the Numidium could be powered. In this event Wulharth managed to Thu'um the guards to death and Zurin Arctus to ash before he dissapeared. Tiber Septim would soon after stroll in, collect the Mantella soul gem and then accuse Zurin Arctus of betraying him in another assassination plot despite referring to the ash pile Zurin Arctus had become as a heroic guard. Perhaps Tiber Septim publicly reffered to Wulfhath (while the Underking) as Zurin Arctus because no one would like the idea of the Nordic diety Ysmir (the first one) becoming undead.

There's the possibility that the Vici's were related to Titus Mede II through his mother (assuming she wasn't the empire's monarch, if so then related to the father). Andorak Septim, his father  and even his heirs, were all able to wear the Amulet of Kings (I'm making an educated guess here since I think it was Uriel Septim IV who was Andorak's father) so the Mythic Dawn could have offed them to as a precaution to prevent the Dragonfire's relighting, so I'm unfamiliar with any post-oblivion refferences to that branch of the Septims surviving. As for Motierre it seems to me that he'd have become potentate seeing as how Titus' death could create an Interregnum allowing Motierre (if a powerful figure on the Elder Council) to become potentate like Ocato and that ancient Akaviri potentate.