I just found something that I haven't seen on the forums, which is ridiculous, considering it may DIRECTLY refer to the hero of Oblivion. I will transcribe here for you exactly, verbatim, the last entry in volume 1 of Cicero's journal. Be aware, this may be a huge SPOILER ALERT for many players;

27th of Rain's Hand, 4E 187
Completed the Arena contract. I ultimately decided to pose as a starstruck fan, and immediately got into the Grand Champion's good graces. While escorting the arrogant fool through the Great Forest, I slashed his throat and left the corpse for the bears.

Now, given the date of this journal entry, it is ENTIRELY possible that Cicero, the insane jester in the Dark Brotherhood, killed YOU, the Arena Grand Champion and Hero of The Oblivion Crisis. Discuss.

No. It isn't.

That's close to 200 years after the events of Oblivion. Most of the races don't live that long with the exception of some Mer, I believe.

Not to mention that it's a well known fact that the Hero becomes...

The [censored] Adoring Fan??

That's the first conclusion I came to.

It's an allusion to the Adoring Fan, but it's not THE Adoring Fan. As was stated before I'm almost positive Sheogorath is the CoC.

Sheogorath is the same Sheogorath from Oblivion - proving that the whole expansion was one huge mind-trip designed to make the most powerful hero of his time believe he had become a god.

OK, 1. the Adoring Fan was a bosmer, Cicero is imperial. 2. At the end of Shivering Isles you become Sheogorath.

Agreed. He succeeded in driving the CoC mad.

First- perhaps YOU became Sheograth, but I did not. I never played the Shivering Isles expansion, despite owning it, and this have never become Sheograth.

Second- the adoring fan may have appeared to be a Bosmer, but this would not exactly be the first time that illusory magic has been used to change someone's appearance (look up Jagar Tharn). This may be a big stretch to some, but I don't think it's impossible, given that the magic school of illusion is also employed by many thieves and assassins.

Also... THIS. You don't actually BECOME Sheograth. Martin also died; he did not in fact BECOME Akatosh, as some people have tried to say.

Uhm no. He alludes to the fact that he was there when Martin sacrificed himself. He also talks about the Shivering Isles butterflies as seen from the prospective of the CoC. The CoC grew into his role of Sheogorath. I wish they had included Jyggylag in Skyrim so people would stop this.

But Sheogorath is a Daedric Prince - he can be pretty much everywhere.

Pretty sure it's a reference to the adoring fan. If it's even talking about out character.

Based on that logic, all the events surrounding the Champion of Cyrodiil "never happened" for people that never played Oblivion. I think it makes sense the CoC is now Sheograth.

We're going to go ahead and assume that only people who have at least played stock Oblivion count in this debate, otherwise there would be no lore to debate at all. Let's just say, for instance, a player's character was decidedly GOOD, having nothing to do with the realm of evil in any way. The player would therefore never finish the Shivering Isles, and never become Sheograth.

I usually make my favorite run-throughs with a Dunmer, walking on the side of good and all that. I did not complete Shivering Isles, as it would have been completely out of character. So I never became Sheograth. Summer can live for millenia, so assuming I did not die of some disease, or a mass cliff racer attack upon my chance return to Morrowind, I would still be alive in 4E 187.

In my personal role-play, Cicero could very well have killed me in the Great Forest.

But, if you personally adhere to the Shivering Isles included lore, all the more power to you. =)

From http://www.uesp.net/wiki/Skyrim:Sheogorath and http://www.uesp.net/wiki/Skyrim_talk:Sheogorath

I really think it's intended that it's possible all the events of Shivering Isles happened and the CoC is now Sheogorath. It's especially telling that Sheogorath says he was "present for the Oblivion Crisis" and talks of his interaction with Martin Septim, where as the Sheogorath of Oblivion really played no part except for Shivering Isles.

I think it was just a reference to the Adoring Fan and not the CoC.

And yes the CoC is Sheogorath, or at least that's what is heavily hinted at. The people arguing that the CoC did not become Sheogorath because they never completed the quest have no basis for their argument. That's like me saying I never did the Main Quest of Oblivion so the Oblivion Crisis never happened despite the fact that it is referenced in game. Lore is lore

YOU may not have become Sheogorath but the CoC in LORE did.
He done everything you could do in Oblivion.

And that's why they don't specify anything. They just "hinted the possibility" of the CoC being Sheo. If your character wasn't Sheo, Sheo still being Sheo, if your character turned into Sheo, Sheo and CoC are the same person.

But, back to the OP, no... It's very improbable, more of a Easter Egg of the Adoring Fan.