Night Light/Stalwart Shield · 4:06pm Mar 13th, 2017
Ahem.
I, SvenBjorn, know that the father of Twilight Sparkle is a blue unicorn by the name of Night Light. Furthermore, I knew this when I designed Stalwart Shield. I deliberately wandered from canon when I created this character.
I have nothing against Night Light, and in fact would have had no problem altering him to fit the planned course I have in mind for Stalwart Shield. The only reason I didn't was because I was practicing with my ability to create original characters. Stalwart Shield didn't replace Night Light for plot reasons, but rather so I could practice my writing skills. That's all.
There. Now if someone else tells me Stalwart Shield isn't the name of Twilight's father, I can just point them at this.
You can also point out that you tagged the story alternate universe. Some people are just a-holes.
4454297 I considered, but decided it was a step too far towards being an A-hole myself.
I knew your story won't follow the canon when Twilight's father showed the Book of Magic with the picture of the Element of Magic in its six-point star shape on it.
Since the Element Reference book showed every Elements has the same gem-type shape (and in the show, it just a round rock before Twilight found it), it is impossible for somepony other than the Princesses to know the Element of Magic's true shape.
... unless this universe does not follow the main canon.