King Sombra theories

If you've read The Journal of the Two Sisters, you'd know that the Crystal Empire was previously ruled by Princess Amore, before King Sombra ruled over it. Also, Starswirl created an age reversal spell and uses it on himself. The Reflections arc in the comic series showed Starswirl and Celestia traveling through the magic mirror, which led to Celestia eventually finding the alternate dimension with Sombra ruling alternate Equestria.

Does anyone else think King Sombra and Starswirl might've interacted with each other at some point? Seems pretty interesting, considering Starswirl created over 200 spells and could keep himself young with an age reversal spell, while Sombra was specialized in dark magic. Imagine a battle between those two! And imagine Sombra and Amore? My theory is Sombra murdered Amore to usurp the throne. Maybe Sombra killed Starswirl at some point in the pre-classical era?

My bet's that King Sombra enslaved the empire, murdered Amore, and killed Starswirl when Sombra discovered the magic mirror. Just some neat speculation.

But hey! More worldbuilding! That's always good!

I want to know your theories on this part of history.
Thanks!

Comments

[Starlight Nova]

Also, Starswirl created an age reversal spell and uses it on himself.

This happened in the aforementioned book, right? (no, I haven't read it)