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The Complete List Of Elon Musk’s 14 Children: Names, Mothers, And The Unbelievably Unique Meanings (2025 Update)

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The world's richest man and CEO of SpaceX and Tesla, Elon Musk, is also a father to a rapidly expanding family, a fact that has dominated headlines as much as his business ventures. As of the latest reports in 2025, Musk is the father of a staggering 14 children, whom he shares with four different women: his first wife, Justine Wilson; musician Grimes; Neuralink executive Shivon Zilis; and conservative author Ashley St. Clair. This extensive list of children, including a new baby announced in early 2025, makes his family tree one of the most discussed and complex in the celebrity and tech world. The unique names and the complex family dynamics continue to spark immense curiosity globally.

The billionaire has repeatedly expressed his concern over declining birth rates, often stating that he is "doing his part" to combat the issue by having a large family. This article provides the definitive, up-to-date list of all 14 of Elon Musk's children, detailing their names, their mothers, and the surprising chronological order of their births, offering an intimate look into the famous family.

The Complete Biography of Elon Musk’s 14 Children (Chronological List)

Elon Musk's children span over two decades, beginning with his first marriage to Justine Wilson. The births include a single child, two sets of twins, a set of triplets, and two more single children, totaling 14 lives. Here is the full list of the children and their mothers:

  • Nevada Alexander Musk (Born 2002, Deceased 2002)
    • Mother: Justine Wilson (First Wife)
    • Note: Nevada was Musk's first child, born in 2002. Tragically, he passed away from Sudden Infant Death Syndrome (SIDS) at just 10 weeks old.
  • Griffin Musk & Vivian Jenna Wilson (formerly Xavier) (Born 2004)
    • Mother: Justine Wilson (First Wife)
    • Note: The twins were conceived via IVF. Vivian Jenna, who legally changed her name in 2022 to reflect her gender identity and take her mother's maiden name, is one of the most public-facing of Musk's children.
  • Kai Musk, Saxon Musk, & Damian Musk (Born 2006)
    • Mother: Justine Wilson (First Wife)
    • Note: These triplets were also conceived via IVF, making them the fifth, sixth, and seventh children born to Musk.
  • X Æ A-Xii Musk ("X") (Born May 4, 2020)
    • Mother: Grimes (Claire Elise Boucher)
    • Note: The name, pronounced "Ex Ash A Twelve," became instantly iconic. "X" stands for the unknown variable, "Æ" is the elven spelling of AI (artificial intelligence) or love, and "A-12" is the precursor to the SR-71 aircraft.
  • Strider & Azure Zilis (Born November 2021)
    • Mother: Shivon Zilis (Neuralink Executive)
    • Note: These boy-girl twins were born secretly via IVF, just weeks before Musk and Grimes welcomed their second child. They were revealed publicly in mid-2022.
  • Exa Dark Sideræl Musk ("Y") (Born December 2021)
    • Mother: Grimes (Claire Elise Boucher)
    • Note: Exa, known as "Y," was born via surrogate. Her name is a nod to the supercomputing term "ExaFLOPS." Sideræl is pronounced "sigh-deer-ee-el."
  • Techno Mechanicus Musk ("Tau") (Born 2023)
    • Mother: Grimes (Claire Elise Boucher)
    • Note: The birth of the third child with Grimes, nicknamed "Tau," was revealed in Walter Isaacson's 2023 biography of Musk. The name continues the theme of tech-inspired, unique monikers.
  • Romulus St. Clair (Born September 2024)
    • Mother: Ashley St. Clair (Author/Influencer)
    • Note: The birth of this child, named Romulus, was announced by the mother in February 2025. This revelation introduced a fourth mother into the Musk family narrative.
  • Arcadia Zilis (Born Late 2024)
    • Mother: Shivon Zilis (Neuralink Executive)
    • Note: The birth of a third child with Zilis, a daughter named Arcadia, was reported in late 2024.
  • Seldon Lycurgus Zilis (Born February 2025)
    • Mother: Shivon Zilis (Neuralink Executive)
    • Note: The 14th and most recent publicly known child, Seldon Lycurgus, was announced in early 2025, bringing the total number of children with Zilis to four.

The Four Mothers: A Complex Family Tree

The structure of Elon Musk's famous family tree is defined by the four mothers of his children, each with a distinct relationship and background. The co-parenting dynamic is a central element of the modern Musk family, which he has publicly stated is a priority.

Justine Wilson: The First Wife and Mother of Six

Justine Wilson, a Canadian author, was Musk's college sweetheart and first wife. They were married from 2000 to 2008 and share six children, though one, Nevada, tragically passed away. Following Nevada's death, the couple turned to in-vitro fertilization (IVF) to conceive their subsequent children: the twins Griffin and Vivian Jenna (2004), and the triplets Kai, Saxon, and Damian (2006). Justine Wilson remains a literary figure and has occasionally spoken about the challenges of co-parenting with the high-profile billionaire.

The most notable public development in this branch of the family was Vivian Jenna's legal name change, a move that highlighted her desire to distance herself from her father and embrace her gender identity. This personal choice brought a new level of public scrutiny to the lives of Musk's older children, focusing on themes of identity and family legacy.

Grimes: The Musician and Mother of Three with Unique Names

Claire Elise Boucher, known professionally as Grimes, is a Canadian musician and artist who famously dated Musk from 2018 to 2021. They share three children, all known for their highly unconventional, technology-inspired names: X Æ A-Xii ("X"), Exa Dark Sideræl ("Y"), and Techno Mechanicus ("Tau"). The naming conventions reflect the couple's shared interest in futurism, space, and artificial intelligence, themes central to Musk's companies like SpaceX and Neuralink.

Their relationship and co-parenting arrangement have been described as fluid, with Grimes often providing insight into their unique family life. The names X and Y quickly became pop culture entities, sparking global debates about celebrity children, famous family life, and the boundary between personal and public life. Exa Dark Sideræl's name, for instance, is a complex reference to "exaFLOPS," "dark matter," and "sidereal time," embodying a blend of science and fantasy.

Shivon Zilis: The Neuralink Executive and Mother of Four

Shivon Zilis, a high-ranking executive at Musk's neurotechnology company, Neuralink, is the mother of four of his children. The first two, twins Strider and Azure, were born in November 2021, a birth that became public knowledge through court documents filed to change the children's names to include Musk's surname. The twins’ birth was followed by the births of Arcadia and, most recently, Seldon Lycurgus in February 2025.

Zilis and Musk's co-parenting arrangement is rooted in their professional relationship and shared vision for the future, particularly concerning the declining birth rate and the advancement of human-AI symbiosis. The focus on having children with a colleague in a major company like Neuralink has generated significant discussion about work-life boundaries and the billionaire's personal philosophy on procreation.

Ashley St. Clair: The Newest Mother in the Family

The newest addition to the complex family structure is Romulus St. Clair, born in September 2024 to conservative author and influencer Ashley St. Clair. The news of this child, announced in early 2025, pushed the publicly known total to 14 children. The revelation of Romulus St. Clair's name and the paternity confirmation added another layer of intrigue to the already complicated Elon Musk biography, demonstrating his continued commitment to fatherhood across multiple partnerships.

The sheer number of children, the unique circumstances of their births (including the use of IVF and surrogacy), and the unconventional names like X Æ A-Xii and Techno Mechanicus solidify the Musk family as a major topic of public interest. As a famous family, their story is a living case study in modern celebrity children, co-parenting, and the intersection of immense wealth with personal philosophy.

elon musk kid
elon musk kid

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