The Billionaire's Legacy: A Complete Guide To Elon Musk’s 14 Children And Their Four Mothers

As of December 2025, the family tree of tech mogul and X (formerly Twitter) owner Elon Musk continues to be one of the most talked-about and rapidly expanding in the world. The billionaire entrepreneur, known for his ambitions in space exploration with SpaceX and electric vehicles with Tesla, has also made headlines for his large and complex family. The latest reports confirm that Musk is now the father to a total of 14 children, born to four different mothers, reflecting his public belief in the importance of a high birth rate for the future of civilization. This extensive family dynamic includes new additions, unique names, and even a high-profile custody battle that has brought the private lives of the 'Musk-eteers' into the public eye, constantly generating fresh news and speculation.

The sheer size and complexity of his family, coupled with the unconventional names of some of his youngest children, have captivated the public. From his first set of twins and triplets with his ex-wife Justine Wilson to the highly publicized children with musician Grimes and the surprise twins with Neuralink executive Shivon Zilis, the narrative surrounding the Musk family is constantly evolving. The most recent updates involve a newly reported mother and a legal dispute, confirming that the story of Elon Musk's children is far from over.

The Complete List of Elon Musk’s 14 Children and Their Mothers

Elon Musk's children span over two decades, from his first marriage to author Justine Wilson to his most recent reported additions. The total number of living children is 13, as his firstborn son tragically passed away as an infant. This list provides the most current, chronological breakdown of the 'Musk-eteers' and their mothers, as reported in 2025.

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• Nevada Alexander Musk (Mother: Justine Wilson)
  • Born: 2002
  • Tragically passed away from SIDS (Sudden Infant Death Syndrome) at 10 weeks old.
• Vivian Jenna Wilson (Twin, Mother: Justine Wilson)
  • Born: April 15, 2004 (Age 21 in 2025)
  • Legally changed her name from Xavier Alexander Musk in 2022, citing gender identity and a desire to no longer be related to her biological father.
• Griffin Musk (Twin, Mother: Justine Wilson)
  • Born: April 15, 2004 (Age 21 in 2025)
• Kai Musk (Triplet, Mother: Justine Wilson)
  • Born: 2006 (Age 19 in 2025)
• Saxon Musk (Triplet, Mother: Justine Wilson)
  • Born: 2006 (Age 19 in 2025)
• Damian Musk (Triplet, Mother: Justine Wilson)
  • Born: 2006 (Age 19 in 2025)
• X Æ A-Xii (X) (Mother: Grimes, Claire Boucher)
  • Born: May 4, 2020 (Age 5 in 2025)
  • Famously known for his original name, X Æ A-12, which was later legally changed to X Æ A-Xii.
• Strider Sekhar Sirius Musk / Strider Zilis Musk (Twin, Mother: Shivon Zilis)
  • Born: November 2021 (Age 3 in 2025)
  • Conceived via IVF, with the birth kept private until a 2022 report.
• Azure Astra Alice Musk / Azure Zilis Musk (Twin, Mother: Shivon Zilis)
  • Born: November 2021 (Age 3 in 2025)
  • Shivon Zilis is a top executive at Neuralink, one of Musk’s companies.
• Exa Dark Sideræl Musk (Y) (Mother: Grimes, Claire Boucher)
  • Born: December 2021 (Age 3 in 2025)
  • Born via surrogate and is affectionately nicknamed 'Y.'
• Techno Mechanicus (Tau) (Mother: Grimes, Claire Boucher)
  • Born: Reported in 2023
  • Known by the nickname 'Tau,' this child's existence was disclosed in Walter Isaacson's biography of Musk.
• [Unnamed Child] (Mother: Ashley St. Clair)
  • Born: September 2024 (Announced February 2025)
  • The existence of this child was revealed amidst a high-profile custody battle in early 2025.
• Seldon Lycurgus Musk (Mother: Shivon Zilis)
  • Born: Reported February 28, 2025
  • The reported newest addition, expanding the family to 14 children.

The Latest Additions: New Mothers and Custody Battles

The year 2025 brought the most significant update to the size of Elon Musk's family, confirming a total of 14 children and introducing a fourth mother, conservative journalist Ashley St. Clair. This revelation came not through a joint announcement but through court documents related to a contentious custody battle.

The child, reportedly born in September 2024, was confirmed to be Musk's after a New York Supreme Court ordered him to take a paternity test, which confirmed a 99.9999% probability. St. Clair is reportedly suing for sole custody, having engaged in public disputes with the billionaire on his social media platform X. Alleged text messages revealed in the custody case indicate Musk's desire to have a "legion" of new children, telling the mother of his 13th child that he wanted to "knock her up again." This ongoing legal drama highlights the complex and often chaotic family dynamics surrounding the world's richest man.

Furthermore, reports have surfaced of another new child with Shivon Zilis, the Neuralink executive who already shares twins with Musk. The reported birth of Seldon Lycurgus Musk in February 2025 would bring the total number of children to 14, solidifying Musk's position as one of the most prolific fathers in the public eye.

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A New Identity: Vivian Jenna Wilson's Public Statement and Name Change

One of the most profound and personal updates regarding Musk's children came from his eldest daughter, Vivian Jenna Wilson. In 2022, shortly after turning 18, Vivian filed a petition in Los Angeles County Superior Court to legally change her name and gender identity.

The court petition cited two primary reasons for the name change: her gender identity and, crucially, "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 surname, Wilson, is her mother Justine Wilson's maiden name. This public and decisive move to sever ties with her father was a significant moment, generating widespread media attention and commentary on the strained relationship between the billionaire and his daughter.

Musk later commented on the situation, suggesting that the ideological influence of certain educational institutions may have played a role in the estrangement. While he has publicly supported transgender rights, the rift with his daughter remains a stark reality in the Musk family narrative, underscoring the challenges of parenting under the intense global spotlight.

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The Unconventional Names and the Drive for Procreation

The children Musk shares with musician Grimes are famous for their unique, almost cryptic names, which have become a major talking point for the family's topical authority. The first, X Æ A-Xii (X), was an immediate internet sensation, with the name being a blend of an algebraic variable, an elven spelling of AI, and a reference to the Lockheed SR-71 Blackbird.

Their second child, Exa Dark Sideræl (Y), is equally unconventional, and their third, Techno Mechanicus (Tau), continues the trend of blending technological and esoteric references. Grimes has stated that the names are meant to be unique and forward-thinking, matching their desire for their children to have a non-binary, futuristic identity. These names reflect the billionaire's own fascination with technology, space, and a certain level of futurism.

Musk has repeatedly voiced his concern about global underpopulation, stating that a declining birth rate is one of the biggest threats to human civilization. His large family is often seen as a direct, personal response to this concern. The sheer number of his children, now totaling 14, makes him a highly unusual figure among modern-day billionaires, whose personal lives are usually far more shielded from public scrutiny. The complex relationships with the mothers—Justine Wilson, Grimes, Shivon Zilis, and Ashley St. Clair—and the evolving dynamics of the children themselves ensure that the 'Musk-eteer' saga will continue to be a source of intense public fascination for years to come.