Two Daedric Lords were once Magna Ge (stars): Ithelia and Meridia. They never mention it, though. Given that Ithelia forgot how to use her powers after being imprisoned, I’m going to assume she kinda forgot about being a Magna Ge as well.
I think there's another Daedric Lord who is totally oblivious to her own past star-life. It's Azura. Her actual name is Iana-Lor.
>She sits upon a throne - The Nine Coruscation, or simply TNC because I'm going to quote this text a lot
>Queen of the Night Sky - The Book of Daedra
1. Azura controls light
“The bending of the light" usually refers to Magna Ge's powers.
>…now Boethra was able to dance just as fast as the light that bent the wave - the Bladesongs, Boethra vs. Merid-Nunda
>The light bent, and somewhere a history was finally undone. - the Sermon 37, Mnemo-Li retcons Vivec just because she can
>But Azurah knew she could not leave it thus, so she bent the light just so that Merid-Nunda reflected upon her own colors and became trapped within them
>The Rainbow Angel did not attack her sister as a typical foe but swirled around her as cutting light and blinding fervor. Most would have succumbed, but Azurah was a master of light herself, even those beyond the visible - Bladesongs
Magna Ge color alignment closely follows the spectral colors chart (Malacara). Iana-Lor is Violet. Merid is Red. "Those beyond the visible" = ultraviolet and infrared.
2. Fate control
Azura is the only Daedric Lord so far who “created” a Prisoner, the Nerevarine.
>... scatters the souls of mortals along innumerable roads. Through this … fate has a chance to be born - TNC
>FATE is the Book that She writes in to inscribe our worth and deserts. - The Five Points of the Star
3. Iana-Lor’s various titles correspond to Azura(h)’s
The Silent Mother reminds me of:
The Bladesongs of Boethra, by Modun-Ra, the Hidden Voice
The Sky Spirits by Amun-dro, the Silent Priest
Modun-Ra is an anagram of Amund-ro. Either they are actually the same person, or they are in the same cult (Azurites).
Iana-Lor is also called "The Soul Matron".
>She [Azura] is associated with Dusk and Dawn, and is sometimes called the Mother Soul. - The Anticipations
4. The Nine Coruscations book
They are spectral colors. Theoretically, you should put them in rainbow order or something like that. Instead, the author sorts them into two groups.
Volume 1: Mnemo-Li, Sheza-Rana, Londa-Vera, Valia-Sha, Unala-Se. 3 out of 5 characters are probably screwed: “never truly formed/after her fall/began to fade away…”
Volume 2: Xero-Lyg, Merid-Nunda, Iana-Lor, ... (Ithelia). 2 out of 4 characters are Daedric Lords.
I suspect they're separated by alignment - Aetherius and Oblivion.
5. Azura's personality change
It seems Iana-Lor and Azura are very different: one is driven by passion, the other is not. It might be a retcon of Azura’s old lore. According to The Trial of Vivec, she changed her nymic and her entire personality.
>By this Shadow, I call your neonymic forth, your chosen throne, sundown and sunrise, death and birth of shadow. You are bound to this place.
>By this Lover, I call your protonymic forth, your secret throne, youth and return, the lover's morning, the loved one's end. You are buried in this place.
The Trial was a part of Loranna's RP. Loranna -> Iana-Lor. You see? You see.
6. The Triple Goddess
There are references to the Triple Goddess archetype in Azurah imagery. I’m going to make yet another stretch and say it’s a hint about her different personas: Iana-Lor, Azurah, Azura.
7. The Soul Matron
>Iana-Lor rescues souls … and no destination. Their energy is … magicka required … of the Aurbis
Fun fact: souls are made from Aether. They're basically fuel.
>Souls have also been described as the piece of every mortal which comes from Aetherius, the realm of pure light and magic, and a "tiny star" which flares into a "sun" when magic is invoked – UESP/Lord of Souls
When Iana-Lor ditched Magnus, she rerouted the power supply and bound some souls to the Moons.
>Khajiit know it was Azurah that lifted us up and bound us to the Lunar Lattice, and thus broke us from the chains of fate so that we alone shape our own future. - The Wandering Spirits
>Shando-ri Yes. Azurah charged us with safeguarding lost souls and bringing them back to her embrace. Every soul of the Ja-Kha'jay is sacred.
In Our Perfect Forms, Amun-Dro claims Khajiits should defy Azurah’s will at the end of times. Curious. Didn't you say she freed you?
>When unto the Moons we will climb/And defy the fate of what Mother [Azurah] wills
>What is necessary will be, as decreed by …. And by her will the disks continue to whirl.
This makes no sense... until you realize the Lunar Lattice didn't free Khajiits.
>Azurah: I wouldn't say freed, more like, under new management (source: me)
First, it makes the kitties vulnerable to whoever controls the Moons. Case in point: Void Nights. Second, being this dependent on Azurah is risky because her original persona is getting erased. This is why she needs help maintaining the Lattice.
>Hermorah records all the events he perceives and stores them away in a great library under the sea. A patient spirit, he helped Azurah maintain the Moons and their Motions after the world was made and Khenarthi could no longer bear to do so. - The Worldly Spirits
Eventually, Azura(h) will forget what to do with the Lattice and why she made it in the first place. Dementia is a b*tch. But don’t worry. It might be reversible.
>Iana-Lor is not gone. Not yet. Not while the Moons are aloft and maintained in their Motions.
the end.
p.s. pspspspsps
>Dylora: It is our home. It is where our numbers are strengthened, and where we return to the realm from the Waters of Oblivion.
Oblivion is "dementia given dimension," and all daedra are alcoholics.