Keeping up with Elon Musk used to be about rockets and electric cars. Now? It's basically a full-time job tracking his family tree. Honestly, it’s a lot. As of early 2026, the count stands at 14 children with four different women.
Most people think it’s just a random string of flings, but if you look closer, there’s a weirdly specific philosophy behind it all. Musk is a "pronatalist." He’s genuinely convinced that if smart people don’t have more kids, civilization is going to go poof. It’s not just gossip; it’s a demographic mission for him.
The First Chapter: Justine Wilson
Long before the Grimes era, there was Justine Wilson. They met at Queen’s University in Ontario. She was the one who was there for the "broke college student" years and the first big payday. They married in 2000.
Their first child together, Nevada Alexander, was born in 2002. It’s a heartbreaking story. He passed away at just 10 weeks old from Sudden Infant Death Syndrome (SIDS).
After that, they turned to IVF. This is where the "multipack" trend started for Musk.
- Griffin and Vivian Jenna Wilson (born 2004): Twins. Vivian, who was born Xavier, famously cut ties with Elon in 2022, legally changing her name and saying she didn't want to be related to her biological father "in any way, shape or form."
- Kai, Saxon, and Damian (born 2006): Triplets.
By 2008, the marriage was over. Justine eventually wrote a pretty famous Marie Claire essay about being a "starter wife," which gave the world its first real look at what it’s like to co-parent with a billionaire who works 100 hours a week.
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The Grimes Era: X, Y, and Tau
Then came Claire Boucher, aka Grimes. This relationship was... chaotic.
They made their debut at the 2018 Met Gala and spent the next few years in a cycle of "semi-separating" and "fluidly" dating. But they were busy.
- X Æ A-Xii (born 2020): Everyone remembers the name drama. They had to change it from A-12 to A-Xii because California law doesn't like numbers in names. He’s the one you often see sitting on Elon’s shoulders at SpaceX launches.
- Exa Dark Sideræl (born 2021): Nicknamed "Y." She was born via surrogate, and her arrival was actually a total accident—at least, the reveal was. A reporter for Vanity Fair heard a baby crying in the house while interviewing Grimes, and the secret was out.
- Techno Mechanicus (born 2022): Also known as "Tau." This one was kept under wraps for over a year. We only found out about him because of Walter Isaacson’s biography.
Things aren't exactly "cool" between them now. They’ve been locked in a pretty intense custody battle since 2023. Grimes has been vocal about her priority being keeping her kids out of the public eye, which is tricky when their dad is the most famous man on Earth.
Shivon Zilis: The Neuralink Connection
This is where it gets really "corporate." Shivon Zilis is a top executive at Neuralink, one of Musk's companies.
In late 2021, while he was still technically with Grimes (or at least awaiting a baby with her), he and Zilis welcomed twins: Strider Sekhar Sirius and Azure Astra Alice.
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Wait, it gets more crowded.
In February 2024, they had a daughter named Arcadia. Then, just recently in February 2025, Zilis announced a fourth child, a son named Seldon Lycurgus.
Zilis has defended the arrangement, essentially saying that Musk wants high-IQ people to procreate and she was happy to participate. They aren't "dating" in the traditional sense, but they are very much a family unit in Austin.
The Newest Addition: Ashley St. Clair
The most recent entry into the world of elon musk baby moms is Ashley St. Clair. She’s a conservative commentator and author who claimed she and Musk welcomed a son, Romulus, in September 2024.
For a while, people weren't sure if it was legit. Then the lawsuits started.
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By April 2025, DNA tests reportedly confirmed Musk’s paternity at 99.9999%. It hasn't been smooth sailing. St. Clair sued for sole custody, and there's been some public sniping on X (formerly Twitter) about political differences and parenting styles.
What This Means for You (and the Future)
It's easy to look at this as just "rich guy drama." But it’s actually a peek into a very specific subculture of Silicon Valley pronatalism. Musk isn't the only tech billionaire obsessed with birth rates, but he’s definitely the loudest.
If you’re trying to keep track of this for your own sanity, keep these three things in mind:
- Legal Battles are Brewing: Between Grimes and St. Clair, the next few years will likely be defined by high-stakes custody hearings in Texas and New York.
- Naming Patterns: Notice a trend? We went from "Griffin" to "X Æ A-Xii" to "Seldon Lycurgus." The names are getting more "Galactic Empire" as time goes on.
- The Pronatalist Agenda: Expect Musk to continue advocating for large families. He sees his 14 kids as his personal contribution to saving the human race from "population collapse."
For anyone following the business side of Musk’s life, keep an eye on how these personal legal disputes might affect his focus at Tesla or SpaceX. Historically, he’s been able to compartmentalize, but with multiple active custody battles and 14 kids in the mix, the logistics alone are a Herculean task.