A story how Ilaris got her name.
She was not a clever pony, and her child was too young to be smart. It was the Goddess' mercy to pick the pair and save their lives, as dehydrated and sick, running from raiders.
The alicorns didn't have much mercy for the raiders. The likes of them weren't very welcome in the Unity. Still, one of them, a rabid dash-head, had his mind gone so far that he could not function without the drug... and could barely function with it. So, a filler, a placeholder. Every alicorn is made out of three ponies, but not every mind lasts through the transformation. The weakest ones... fade. This one would do, to save the two.
There was a risk that the mare and her foal would not last. Still, merged with the dash-head buck, the two survived, the buck vanished.
The effect wasn't exactly pretty. The blue goddess inherited faulty eyes of the mare, and the two minds... weren't too bright. Still, another of the children, not as powerful as the others, but still quite formidable in Wastelands' standards... besides, the deed was done, Goddess would not dispose of one of her own.
So there stood the new alicorn surrounded by the new sisters, the minds of the child and the mother bound together, and trying to adapt to living with a crowd of voices in her head.
I think she's kinda cute
A disgrace to our race,
She's faulty. Kill her.
We do not kill us.
Does it speak?
Can you speak, child?
"I... I'm sorry."
She's sorry. Don't be mean to her.
She's us now.
I can't feel her.
I can feel her. The link is weak.
She is with us but weakly linked.
This may be dangerous.
This may be useful.
She needs a name.
"I have a name. I'm Derp Eye. And my daughter is Sunflower. And the buck's name... his name was Razor."
That's unacceptable.
She's a disgrace.
No, child. You need a new name that will name your trinity as one.
A graceful name, like a glorious song
Or a distant star
Or a powerful spell.
What's a star?
She doesn't know what a star is!
Stars are beautiful. We will soar above the clouds, you will see.
Star names are beautiful.
My name is Arcturus
My name is Antares
My name is Polaris
The daughter, Sunflower... maybe Solaris?
Her? Maybe even Celestia? ha ha ha...
"Can I think up a star for a name for myself?"
No, that's silly.
How would one even go about it?
Oh, she's hilarious.
She's a true star!
"I? Star? I... larious?"
Ilaris? That actually sounds good.
Has a nice ring to it.
Matches her well.
There, a thought up star name!
"I-Laris? I like it! It... it sounds nice!"
She seriously likes it?
She isn't offended at the joke?
Let it be, nopony should recognize the origin of the name anyway.
Welcome to the herd, Ilaris!