So we're all familiar with the Capp family at this point:

Beatrice the heiress who longs for meaningful connections

Celeste the middle child who values the original Capp values of chivalry rather than her father's values

Virgilio the rebel outcast who wants nothing to do with the noble life

And of course, Tybalt Capp: head of the Capp dynasty and grand duke of Bellacorde who yearns for more power.

Looking at the Capp family tree, everything seems to be in order at first. We can see Juliette with Romeo and their son Dante. We can see Consort and Contessa Capp as well as Cordelia Capp. Safe to say the Sims team really made sure to flesh out the tree.

But when you get to Tybalt, there is no mention of a partner. Tybalt never married. There's a chance he married someone, had the three kids, and then wife died somehow, but wouldn't she still be on the tree?

This leads me to believe that whoever had kids with Tybalt is someone he wants to keep hidden: a person who could cause damage to the Capp name if word got out. But who could that be...?

Let's look at the kids and how they compare physically to Tybalt to see if we can sus out what physical characteristics the other parent might have.

Tybalt himself has auburn hair and green eyes: traits he gets from his father Caliban while his mother and most of the Capps before her had blonde hair and grey eyes.

Beatrice brings the first clue right off the bat: brown hair and brown eyes. As far as we know, no one else in the Capp family has these traits.

Celeste has green eyes like their father but has black hair. So far it seems like whoever parent 2 is has dark hair. Last but not least...

Virgilio here has brown eyes just like Beatrice, so that leads us to believe whoever their other parent is has brown eyes too. Now at a glance, you might say: "Oh, Virgilio has blonde hair. He probably gets that from his grandparents, right?" Well, dear reader, I encourage you to look closer. Virgilio's hair may be blonde...but his eyebrows are black. This likely means Virgilio originally had black hair but dyed it blonde at some point.

So what have we learned so far?

Dark hair, likely black

Brown eyes

Someone Tybalt wouldn't want people finding out about

I looked towards The Sims 2 to see if I could find any further hints. Maybe Tybalt had a crush on someone in the game where he made his first appearance. But alas, most of his relationships were acquaintances with the only exceptions being Consort Capp who was labelled as a friend, and Romeo and Mercutio Monty who were labelled as enemies.

So I was at a dead end for a little bit. I couldn't figure out who it could be. I tried looking at some of the NPCs in Ondarion to see who it could be but couldn't come up with an answer.

Until a thought hit me.

While they aren't in the Sims 4, they matched the description I was looking for...

Mercutio Monty.

"Uhh...Soul...male sims can't have babies with other male sims."

True...but they can have science babies.

So it's time for...

Soul's Sims 4 Tycutio Theory/Headcanon!

Somewhere between the events of Sims 2 and 4, Mercutio and Tybalt have a classic enemies to lovers story play out. However, unlike Romeo and Juliette being able to put aside their family names for love, Tybalt values the Capp dynasty too much, and thus keeps their relationship secret to avoid bringing disgrace to his family name. Eventually, he realises that in order to keep the Capp dynasty alive, he'll need heirs. So he concocts a cover story where he had a fiance who tragically died giving birth to his triplet children: Virgilio, Beatrice and Celeste. In reality, he had three science babies with Mercutio. In order to maintain the secret, Mercutio stayed in Veronaville while Tybalt raised the children in Bellacorde. Tybalt and Mercutio keep in touch through secret letters with Mercutio passing by Tybalt's home to check up on them whenever he's visiting Romeo and his family and even occasionally attending masquerades in disguise. The children have no idea Mercutio is their father and only know him as Romeo Monty's older brother. Mercutio hopes that he can one day persuade Tybalt to put the whole Monty vs Capp feud to rest so that they can not only repair the fractured bond between Tybalt and his sister, but also so that he can finally spend time with the children he had to watch grow up from a distance.

Or maybe this is just my way of trying to make Tycutio canon.

But hey, that's just a theory.

A GAME SIMS THEORY!