Subject: Well...
Author:
Posted on: 2018-05-02 02:17:00 UTC
"A Mighty Demon Slayer Grooms Some Ponies" was a good one. I say was because the author dropped the ball at the end and had to delete the chapter. What's still there is worth a look.
Then there's the "Pony POV Series" which has the previous generations in the backstory... but it might take a while to get to. The story is also worth a read, even if it's also quite long.
Let me know what you think and I can point you in the right direction.