[@Silver Carrot][@Teyao]

Alright, slapping this down as a possible parentage connection, just to get things outta the way. Zeroth, chime in if you want.

Since Sherry is half-sisters with Estelle, and since Estelle is currently born between 1st Wife and Patriarch, that would necessitate her being associated the Patriarch.

In the meanwhile, Rowan and Ferrucio are half-brothers. Ferrucio himself is born from a non-Kaides and a wife in House Kaides, so for half-brother status to be maintained, they'd have to share a mother.

Rowan is 2 years older than Ferrucio, so thankfully, there aren't any funny not-twins hijinks going on, but he IS the same age as Sherry, whom Ferrucio was basically let into the House to support/serve, so they'd have to be something wonky. On the plus side, Sherry and Rowan both have similar colored hair, so maybe they can pull off the fraternal twins look.

In any case then, my thought is...

The Third Wife is of a more willful stock than the 1st and the 2nd, her defiance made more so due to how the Patriarch certainly treats every one of his wives as disappointing breeding stock more than anything else. Despite having gone through a painful labor to give birth to twins (Rowan and Sherry), the man was too busy "rousing the troops" (read: fucking his secretary mistress) to pay attention to his actual wife. This fed the brewing discontent and discomfort that had dwelt ever since she married into House Kaides, an inferiority complex and a sense of alienation manifesting through the simple pressure of having to bear a potent heir.

After all, the Patriarch's pedigree was overpowering.

It would be the fault of the wives then, for introduction 'weaker' blood into the House.

Whereas the 1st Wife and 2nd Wife coped in their own ways, the 3rd Wife became disillusioned with her marriage instead. It was through her family's own pedigree and her talents as a swordswoman that she was able to seize the Patriach's hand in marriage, even if two ranks below the others. What had she even seen in him to begin with then, beyond his title?

Seeking comfort, she sought the attention of another, and from an night of uncommon vulnerability and hurt, Ferrucio was born.

It was a mark of her infidelity, one that would be held over her head forever.

The only way to make it right then, would be to ensure that this bastard-child was good for something. Rowan looked to be an unruly beast, but Sherry held promise. What did it matter that she was rotten to the core? Ferrucio could become her shield and her servant, raised as the obedient little mongrel to his cruel but supremely-talented older sister, and so long as this situation could cause an Aura-Knight to have come from [i]her[/i] blood, then it was all worth it.

It was not worth it.

Sherry fell from grace, to such a degree that the 3rd Wife would have killed her herself for becoming a deserter.

Rowan's ferocity never amounted to anything, less a knight and more a sacrificial pawn who simply didn't die, yet never seized glory.

Ferrucio became a Royal Guard, but at a time when the Royal Guard were nothing more than glorified meatshields.

...

When Kaidisyum was invaded, the 3rd Wife lead the initial charge against the Frozen Heart's forces, burning as brightly as the setting sun.

As if to remind the world, and perhaps herself, that she had once been something more than disappointment.

Now one of you give your mom a name.