In the northern regions of Griffonia, clans of griffons eke out a tough existence amongst the frigid crags, far removed from their more peaceful relatives to the south of the continent. Here the right to the throne belongs to the House which proves themselves most powerful, and matters of succession are often unsavory affairs.
The late King Gryphus III of House Ironclaw rose to power as a popular figure but grew increasingly megalomaniacal in his later years, seeking to expand his rule by establishing a vast empire. Gryphus looked to magical artifacts as a means to fulfill his ambitions and in 1006 y.a.b. he invaded eastern Equestria, sweeping through the kingdom towards its capital. He was defeated in the single day Siege of Canterlot.
Gryphus' younger brother Rhosus claimed the throne after his death. Gryphus was also survived by his three children (eldest to youngest): Darius, Cassandra, and Alex.
The capital city of North Griffonia is Twistspire.
Unless of course North Griffonia has a viking-style elective monarchy, or it's succession doesn't work the same way it did in medieval england, in which case none of what I said matters.
This dude is really good with posing and facial expression.
Not like shitloads of sex and violence but a little more grim and action-y.
What does y.a.b stand for?
It's just that all these key events from ancient ages (Sombra's reign, Discord's defeat, Luna's banishment) are in the story only described as "a thousand years ago", so you probably put more thought into the chronology than the screenwriters did.
Why am I getting Ducktales vibes, haha
We need a strong prince to direct our resistance--
Heroic, impartial, of noble degree.
My brother's wife's fourth cousin's foster-son, Gruffydd
Is best for the job as I'm sure you'll agree.
What matter that Glynda's old prince's daughter?
She's exiled to Ponyville and won't return--
I know this for every time airships she's building
I send my spies money to see that they burn.
Adapted very freely from Heather Rose Jones, Welsh History 101