I'm trying to figure out when it was that Alduin and his dragon kin ruled over men? Essentially, when was it when they first 'defeat' Alduin with the Elder Scroll? I've looked all over and on many wiki's, and nowhere does it list a date. Does anyone know? I need to know to ensure some lore of my mod is accurate.

I'm adding my own Island to Nirn, and I want to add a few dragon shouts. So I was thinking of placing dragon walls, with words on them, but that means that dragons had to be there are some point. So I need to ensure it all lines up with when my land was discovered, etc.

Also, when did Shor live, and when was he killed? The ES wiki almost makes it sound like it's at the end of the Third Era, but that cant be true if he is a for of Lorkhan, attributed with creating Nirn in the first place...

Thanks for any help!

Shor is killed during the dawn era.

The whole dragon thing seems to have occurred during the merethic era.

Okay; and since Shor 'took sides with men after the creation of the world', it would make sense that if a large group of them were dying off, that Shor might send an 'avatar' of himself down to help them, right?

And so long as the dragon thing happened a LOOOOONG time ago, its plausible that in my land, there were dragons, but they have long since left? Therefor, even with the events in Skyrim, with Alduin raising them back up, they still aren't present in my land, yet evidence that they were once there exists.

Just making sure nothing here conflicts with established lore.

The bit about Shor would not only make sense, but there's even mounds of precedence for it. Read up on Shezarrines. Pelinal, most notably.

As for the second bit, who knows.
The jury is still out on whether or not Skyrim's very info about dragons contradicts established lore, or even what established lore IS as of Skyrim.
There's been a good deal of discussion on the matter.

"Pelinal plays the same role as a long line of avatars sent by Shor to champion the cause of mankind." Oh my god. Perfect! Though, I believe the avatar of Shor in my lore is in the form of a dragon, instead of a person, but still! Awesome.

As for dragons, since it's all so gray, I can just keep it gray in my lore. Dragons were there at some point. They left at some point. Their word walls and other various things remained. The end.

That pretty much answers all my questions! Thank you so much guys!

A long, long time ago, so long that asking 'when' doesnt even really make sense.
Another revolution of the wheel.
Maybe Arkay was a mortal back then, maybe Meridia still in Aetherius and Trinimac guiding his people.

What we know is that it did not happen during the current timeline, from the first era to the fourth.
It happened in the dawn time, as all things inevetably do.

Great. So as long as my lore only goes back about 450 years (To the end of the Second Era) I wont overlap any lore related to Shors death or Alduins first reign. Perfect.

Sadly, it doesn't seem that Skyrim's lore supports that notion. The Dragon War and the rule of the Dragon Cult apparently occurred within the bounds of the history of the current kalpa, either in the late merethic or early first era. I'd greatly prefer that it was in the Dawn, though.

But where in the first era then, or possibly in who's first era?

Nothing in the timeline as presented so far suggests there is room for such things after the (current) dawn.
There would have been a considerably long time when dragons ruled all men, but the Alessian rebellion happens at around yr. 250 first era.

I suspect a different first era, and Alduin was cast so far out of his place to not only skip forward, but tangential as well.

Edit: I could see Merethic, but that is an extension of the dawn really. I always see it as one beam of light extending from the dawn, but not neccesarily the only one.