All 14 Children Of Elon Musk: Names, Mothers, And The Shocking Reason For A Daughter's Name Change

As of December 2025, the family tree of billionaire entrepreneur Elon Musk has expanded to an astonishing 14 children, a number that continues to shock and intrigue the public. The Tesla and SpaceX CEO, known for his ambition to combat declining birth rates, has a rapidly growing family with four different women, each child carrying a unique name, from the classical to the truly futuristic.

The latest updates in 2024 have introduced new names like Seldon Lycurgus and Arcadia, while the public remains fascinated by the story of his eldest daughter, Vivian Jenna Wilson, and the unique, complex names of his children with musician Grimes. This deep dive provides the most current and comprehensive breakdown of the 'Musk-eteers,' their mothers, and the personal stories behind their identities.

Elon Musk's Children: A Complete Biographical List

Elon Musk's children span over two decades, with his first child born in 2002 and the latest additions arriving in 2024. The following is a chronological list of his 14 children, their birth year, and their mother, based on the most recent public and confirmed reports:

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• Nevada Alexander Musk (Son)
  • Mother: Justine Wilson (First Wife)
  • Born: 2002
  • Status: Tragically passed away at 10 weeks old due to Sudden Infant Death Syndrome (SIDS).
• Griffin Musk (Son)
  • Mother: Justine Wilson
  • Born: 2004 (Twin)
  • Current Age: Early 20s.
• Vivian Jenna Wilson (Daughter)
  • Mother: Justine Wilson
  • Born: 2004 (Twin)
  • Current Age: Early 20s. Legally changed her name and gender in 2022.
• Kai Musk (Son)
  • Mother: Justine Wilson
  • Born: 2006 (Triplet)
  • Current Age: Late teens.
• Saxon Musk (Son)
  • Mother: Justine Wilson
  • Born: 2006 (Triplet)
  • Current Age: Late teens.
• Damian Musk (Son)
  • Mother: Justine Wilson
  • Born: 2006 (Triplet)
  • Current Age: Late teens.
• X Æ A-12 (X) (Son)
  • Mother: Grimes (Claire Boucher)
  • Born: May 2020
  • Nickname: X. The name was legally changed to X Æ A-Xii due to California law restrictions.
• Strider Sekhar Sirius (Son)
  • Mother: Shivon Zilis (Neuralink Executive)
  • Born: November 2021 (Twin)
  • Note: Birth was kept private until July 2022.
• Azure Astra Alice (Daughter)
  • Mother: Shivon Zilis
  • Born: November 2021 (Twin)
  • Note: Twin to Strider.
• Exa Dark Sideræl Musk (Y) (Daughter)
  • Mother: Grimes
  • Born: December 2021 (Via surrogate)
  • Nickname: Y. Her full name is often shortened to just 'Y'.
• Techno Mechanicus (Tau) (Son)
  • Mother: Grimes
  • Born: Unknown (Confirmed in September 2023)
  • Nickname: Tau. His existence was revealed in a biography of Elon Musk.
• Arcadia (Daughter)
  • Mother: Shivon Zilis
  • Born: February 2024
  • Note: Confirmed as the third child with Zilis.
• Seldon Lycurgus (Son)
  • Mother: Shivon Zilis
  • Born: 2024 (Approximate)
  • Note: Confirmed by Musk, often cited as the 14th known child. His name is a nod to classical and science fiction figures.
• Romulus (Son)
  • Mother: Ashley St. Clair (Influencer)
  • Born: 2024 (Approximate)
  • Note: Paternity was confirmed via a DNA test with a 99.9999% probability, according to reports from the mother's side, adding complexity to the total count.

The Profound Meaning Behind Vivian Jenna Wilson's Name Change

One of the most significant and personal stories within the Musk family is that of his oldest daughter, Vivian Jenna Wilson. Born Xavier Musk, she legally changed her name and gender identity in 2022 upon turning 18. This was a clear and decisive step to distance herself from her father, as outlined in her court documents.

The petition for the name change cited two explicit reasons: her gender identity and "the fact that I no longer live with or wish to be related to my biological father in any way, shape or form." The new name, Vivian Jenna Wilson, formally adopts her mother Justine Wilson's maiden name, signaling a strong bond with her mother and a definitive break from the Musk surname.

This public and legal separation highlights a significant personal rift, making Vivian's story a deeply resonant topic when discussing the family dynamics of the world's wealthiest man. She is now legally recognized as female and uses the surname Wilson, a powerful statement of independence and identity.

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Decoding the Futuristic Names: X Æ A-12, Exa, and Seldon Lycurgus

Musk's children with the artist Grimes are perhaps the most famous for their unconventional, almost coded names, which have become a cornerstone of pop culture and LSI keyword searches. These names are a blend of technological, mathematical, and esoteric references, reflecting the interests of both parents.

The Grimes Children: X Æ A-Xii, Exa Dark Sideræl, and Techno

X Æ A-12 (now X Æ A-Xii): The original name, pronounced "Ex Ash A Twelve," was famously deemed illegal in California because it contained a numeral. The name was subsequently changed to X Æ A-Xii, replacing the '12' with the Roman numeral 'Xii'. According to Grimes, 'X' stands for the unknown variable, 'Æ' is the Elven spelling of AI (artificial intelligence) and/or "love," and 'A-12' is a reference to the precursor to the SR-71 Blackbird, her and Musk's favorite aircraft.

Exa Dark Sideræl Musk: Known by the nickname 'Y', her name is equally complex. 'Exa' refers to the supercomputing term exaFLOPS (a unit of computing speed). 'Dark' represents the unknown, and 'Sideræl' is a "more elven" spelling of sidereal, referring to the true time of the universe, not Earth's time.

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Techno Mechanicus (Tau): The third child with Grimes, revealed in 2023, is simply nicknamed 'Tau'. The name continues the theme of technology and science, aligning with the Neuralink and SpaceX executive's futuristic vision.

The Shivon Zilis Children: Strider, Azure, Arcadia, and Seldon

Musk's children with Neuralink executive Shivon Zilis also carry names with profound, often classical or literary, weight.

The twins, Strider Sekhar Sirius and Azure Astra Alice, were born in late 2021. The names Strider and Azure are evocative, while Sekhar is a nod to Zilis's Indian heritage.

The newest additions, Arcadia (a daughter) and Seldon Lycurgus (a son), were welcomed in 2024. The name Seldon Lycurgus is particularly notable, blending the name of Hari Seldon, a pivotal character in Isaac Asimov's foundational *Foundation* series, with Lycurgus, the legendary lawgiver of Sparta. This choice underscores Musk's well-documented fascination with science fiction and the principles of civilization and governance.

The Ambiguity of the 14th Child: Seldon vs. Romulus

The total count of Musk's children has been a moving target, with recent reports creating some public confusion. While the most widely acknowledged count is 14, the identity of the latest child has been subject to conflicting public announcements.

Seldon Lycurgus was confirmed by Musk's associates as his 14th known child with Shivon Zilis. However, around the same time, influencer Ashley St. Clair publicly announced that Musk was the father of her son, Romulus, a claim reportedly backed by a paternity test showing a 99.9999% match.

This situation means that while Seldon Lycurgus is the officially acknowledged 14th child from Musk's inner circle, the existence of Romulus adds another layer of complexity to the narrative, suggesting the total number of children could be even higher. The public narrative continues to evolve, but the overall theme remains clear: Elon Musk is committed to a large family, viewing it as a critical contribution to the future of humanity and civilization.