I won’t. I’ll let the Anuad tell you:
The Old Ehlnofey realm, although ruined, became Tamriel. The remnants of the Wanderers were left divided on the other 3 continents.
Over many years, the Ehlnofey of Tamriel became the Mer (Elves)
The Dwemer (the Deep Ones, sometimes called Dwarves)
The Chimer (the Changed Ones, who later became the Dunmer)
The Dunmer (the Dark or Cursed Ones, the Dark Elves)
The Bosmer (the Green or Forest Ones, the Wood Elves)
The Altmer (The Elder or High Ones, the High Elves).
On the other continents, the Wandering Ehlnofey became the Men: the Nords of Atmora, the Redguards of Yokuda, and the Tsaesci of Akavir.
Or the Maormer, who point out that it is commonly believed they came from Summerset, while rejecting that to say they came from Aldmeris:
Many still believe that the Maormer race of Pyandonea diverged from the racial line of the Altmer when they were exiled from Summerset Isle as criminals. This is the great, traitorous lie of the Altmer!
Translations of tapestries in the Crystal Tower reveal that the great Maormer race is directly descended from the purest strain of our Aldmeri ancestors. We certainly did not come from Summerset, but originated in our ancestral homeland of Aldmeris.
Or the Altmer, doing the same:
It was once believed that the Maormer of Pyandonea were originally exiles from the Summerset Isles, but while it is likely they came from similar Aldmeri ancestors, they certainly did not come from Summerset. Translations of tapestries in the Crystal Tower tell the tale of a far older separation. The Maormer likely differentiated from the ancient Aldmer not in Summerset, but in their original homeland of Aldmeris.
Or how Orcs, who are supposedly Aldmeri outcasts who left Summerset, had already settled Tamriel before the Aldmer were supposed to have arrived in the Summerset Isles:
During the early Merethic Era, the aboriginal beastpeoples of Tamriel – the ancestors of the Khajiit, Argonian, Orcish, and other beastfolk – lived in preliterate communities throughout Tamriel.
In the Middle Merethic Era, the Aldmeri (mortals of Elven origin) refugees left their doomed and now-lost continent of Aldmeris (also known as ‘Old Ehlnofey’) and settled in southwestern Tamriel.
There were already Wood Orcs living in Valenwood when the Elves first arrived from Old Aldmeris. Though there has often been conflict between Orc and Bosmer, they usually share the forest in a tentative truce.
Or Khajiiti mythology placing the predeccesors of the Bosmer and the Khajiit separate from their supposed origin in Aldmeris:
And Azurah took some forest people who were torn between man and beast, and she placed them in the best deserts and forests on Nirni. And Azurah in her wisdom made them of many shapes, one for every purpose. And Azurah named them Khajiit and told them her Second Secret and taught them the value of secrets. And Azurah bound the new Khajiit to the Lunar Lattice, as is proper for Nirni’s secret defenders. Then Azurah spoke the Third Secret, and the Moons shone down on the marshes and their light became sugar.
But Y'ffer heard the First Secret and snuck in behind Azurah. And Y'ffer could not appreciate secrets, and he told Nirni of Azurah’s trick. So Nirni made the deserts hot and the sands biting. And Nirni made the forests wet and filled with poisons. And Nirni thanked Y'ffer and let him change the forest people also. And Y'ffer did not have Azurah’s subtle wisdom, so Y'ffer made the forest people Elves always and never beasts. And Y'ffer named them Bosmer. And from that moment they were no longer in the same litter as the Khajiit.
Or how the Bosmer origin myths don’t really have any out of Aldmeris details:
Once, there was nothing but formlessness. The land held no shape, the trees did not harden into timber and bark, and the Elves themselves shifted from form to form. This formlessness was called the Ooze.
But Y'ffre took the Ooze and ordered it. First, she told of the Green, the forest and all the plant life in it. She gave the Green the power to shape itself as it willed, for it was her first tale.
The Elves were Y'ffre’s second tale. As Y'ffre spun the story, the Elves took the form they have today. Y'ffre gave them the power to tell stories, but warned them against trying to shape themselves or the Green. Shifting and the destruction of the forest were forbidden.
Instead, Y'ffre commended the Wood Elves to the Green, so that they might ask the Green to provide them with shelter and a safe passage, and as long as they respected the Green, it would obey. This is called the Green Pact.
