I agree that it's probably Mannimarco, but the prince is probably not related to the Septims -- it would be lame if he were, since "Oblivion" made it plain that the Septim line is played out. My guess is that Keyes' character is the son or grandson of someone strong enough to take Cyrodiil and reconquer the provinces. It wouldn't surprise me if TES V takes place before the novel, and if the game is set during a time of upheaval.
I could see it being that possibly someone else grasped power in Tamriel and our prince is the son of that person, I don't think it's specified how long after the events of Oblivion the novel will take place.
It would seem unlikely that our prince would be ANOTHER son of Uriel Septim, given that it was established in Oblivion that all his legitimate heirs were killed, and at the end Martin sacrificed himself, it would seem a little ridiculous for another illegitimate child to be pulled out of Oblivion as the story requires it.
In any case, all we can do now is speculate, I suppose, and I guess that's what we'll do. In any case, I'll decide how well it fits Elder Scrolls lore after reading it, or after reading a more detailed account of its content instead if that's enough for me to reach a verdict.
I'd really like to see how they explain magic flying undeath city.
In a world full of magic, including levitation spells, a flying city doesn't sound like it would be too hard to explain to me, it's not like anyone with any credibility in the Elder Scrolls world ever said it was physically impossible for anything city sized to levitate, and even if someone DID make that statement, since the Elder Scrolls communicates its lore to people through potentially unreliable accounts given by in game characters or books for the most part, it can contradict things previously known in some cases, adding a spell that should be impossible based on previously accepted theories of magic, provided the person who discovered it is said to ave disproved those theories or come up with new ones that make his spell possible, now if a city changes its location on the map or the entire environment of a province changes, that's harder to explain.
Now how the undeath part will be worked into the equation is something I'm not sure about, but undead are nothing strange in the Elder Scrolls either, and if the city somehow raises people it kills as undead, necromancy is probably involved, perhaps it is Mannimarco at work, and perhaps not, we shall see.
exactly, TES have been more "down to earth" in its lore, and now suddenly we got flying cities coming out from nowhere.
Of course, I mean, Oblivion is actually a plane of existence wrapped around Nirn and the stars are all holes in it, magic is quite plentiful, and the series is populated by races of cat people who come in a variety of shapes and sizes, and it's all based on the cycle of the world's two moons, and the series deals with such stories as a reincarnated ancient hero going to defeat his old friend who become a god and uses some form of mystical disease to twist his followers in impossible fashions, and his power comes from the heart of a god. The next game in the series deals with creatures that are
totally not demons at all invading the world, which is made possible because of some crazy pact that requires an emperor to wear a mystical amulet in order to keep the demo... I mean Deadra at bay. And of course, magic and mythological creatures are quite plentiful in the world, and let's not forget the elves, orcs and lizard people.
That all sounds pretty down to earth to me.