Board Thread:Oblivion/@comment-9716469-20130519212835/@comment-24508303-20180902201925

I think the best chance of the continuation of the Septim bloodline lies in Martin's involvement of the worship of Sanguine, potentially producing offspring. Sanguine is the Prince of Debauchery and Dark Indulgences, so sex is definitely on the cards for his followers. If Martin and a female worshipper did concierge, and Martin had been converted to the Priesthood of Akatosh before the child was born, there is a chance that Martin would never know, and possible that the mother of said child doesn't know of Martin's identity as a Septim.

As far as dilution of the Dragonborn is concerned, every descendant from Tiber Septim would be less Dragonborn than his father, but Uriel and Martin can both wear the Amulet of Kings whereas the Hero of Kvatch cannot, and the only given explanation is that the Hero lacks the Dragon blood. If dilution does happen, the Martin is less Dragonborn that Uriel, who his less than his father/mother etc. Arguably the Last Dragonborn or even Miraak COULD have worn the Amulet because they are both displayed as Dragonborn (i.e have the Dragon blood) when they absorb the souls of Dragons. Would that make them more worthy of the Amulet of Kings than Uriel or Martin who were descended from a Dragonborn rather than being gifted with the dragon blood like Skyrim's Dragonborn(s)?

What I think is important here isn't necessarily proving Martins possible descendants are Dragonborn, but bel icing in the possibility of their existence, which I feel is more than likely given the nature of Martin's daedra worship. Sanguine in Oblivion sends you to a stuffy party and makes you magically remove everyone's clothes, and has you retrace your steps from a total bender including marrying a Hagraven in Skyrim - would promiscuity be his biggest concern, or a concern of his followers? Probably not.

Daedra worship is taboo enough, so a child born to two daedra worshippers would definitely be considered unholy by the Priests of the Empire, so why would they entertain such a claim? Many women may claim that they fathered Martin's son or daughter, but no matter how many are wrong, only one of those has to be true to prove that the Septim line continues.

Concerning the prophecy of the elder Scrolls, the Dragon fires died and that portion of the prophecy was fulfilled whilst martin was still alive i.e. the Septim bloodline was still alive.

Personally, I'd love there to be a descendant of Martin somewhere. A hidden Septim, child of the famous Hidden Septim. But at the same time, I don't think there is, and the idea is for fanfic and stories, not cannon. Maybe we'll find out in Elder Scrolls VI