The 14 'Musk-eteers': A Complete, Updated List Of Elon Musk's Children, Their Mothers, And Unique Names

As of December 2025, the family tree of tech mogul Elon Musk has expanded to include a reported 14 children, making his personal life as dynamic and headline-grabbing as his ventures at Tesla, SpaceX, and X (formerly Twitter). The billionaire CEO has publicly stated his concern about declining birth rates, a philosophy he appears to be living out through his large and growing family. This comprehensive, up-to-date guide breaks down the full list of the "Musk-eteers," detailing their names, birth years, and the four remarkable women who are their mothers. The latest additions in 2024, including children with Neuralink executive Shivon Zilis and conservative influencer Ashley St. Clair, have cemented his status as a father of one of the world's most talked-about celebrity families.

The Complete Biography of Elon Musk's 14 Children

Elon Musk's children span over two decades, from his first son born in 2002 to the latest additions in 2024. The total count of 14 includes his firstborn, who tragically passed away. The children come from four different relationships, each with its own unique story and public profile.

Children with Justine Wilson (6 Children)

Musk's first wife, Canadian author Justine Wilson, is the mother of his first six children, all conceived via IVF.

• Nevada Alexander Musk
  • Status: Deceased.
  • Born: 2002.
  • Details: Nevada tragically passed away from Sudden Infant Death Syndrome (SIDS) at just 10 weeks old.
• Griffin Musk & Vivian Jenna Wilson (Twins)
  • Born: 2004 (approximately 21 years old as of 2025).
  • Details: Vivian, who was born Xavier Musk, legally changed her name and gender in 2022 to Vivian Jenna Wilson, adopting her mother's maiden name.
• Kai, Saxon, and Damian Musk (Triplets)
  • Born: 2006 (approximately 19 years old as of 2025).
  • Details: The triplets were born two years after the twins.

Children with Grimes (Claire Boucher) (3 Children)

The Canadian musician Grimes (Claire Boucher) shares three children with Musk, known for their distinctively futuristic and unusual names.

• X Æ A-Xii Musk (Nicknamed 'X')
  • Born: May 2020 (approximately 5 years old).
  • Details: Originally named X Æ A-12, the name was later changed to X Æ A-Xii to comply with California law, which prohibits numbers in a name.
• Exa Dark Sideræl Musk (Nicknamed 'Y')
  • Born: December 2021 (approximately 4 years old).
  • Details: Born via surrogate. Her full name has complex meanings, with 'Exa' referring to the supercomputing term exaFLOPS, and 'Sideræl' being a "more elven" spelling of sidereal, meaning true time of the universe.
• Techno Mechanicus (Nicknamed 'Tau')
  • Born: 2023 (approximately 2 years old).
  • Details: The birth of the third child, whose nickname is 'Tau', was revealed in a biography of Musk.

Children with Shivon Zilis (4 Children)

Shivon Zilis, a top executive at Musk's Neuralink company, shares four children with the billionaire. Their relationship and the birth of their children have been a subject of intense media scrutiny, especially given their professional connection.

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• Strider & Azure Musk (Twins)
  • Born: 2021 (approximately 4 years old).
  • Details: The twins were born via IVF, just weeks before Musk's second child with Grimes was born via surrogate.
• Arcadia & Seldon Lycurgus (Daughter & Son)
  • Born: 2024 (less than 1 year old).
  • Details: These two children are the latest confirmed additions with Zilis, born in early 2024, which brought Musk's total count to 13 children at the time of the announcement.

The Controversial 14th Child: Romulus St. Clair

The most recent and controversial addition to the Musk family is a son with conservative influencer Ashley St. Clair. This news, which broke in the latter half of 2024, has added a new layer of complexity to Musk's family life. * Romulus St. Clair

• Born: Fall 2024 (less than 1 year old).
• Mother: Ashley St. Clair.
• Details: The child's name, Romulus St. Clair, was revealed by the mother, who subsequently filed a paternity petition and a lawsuit for sole custody. Reports indicate that St. Clair claimed Musk offered a significant sum of money to keep the birth a secret. The child is often cited as Musk's 14th, though the exact chronological order with the Zilis children remains unclear due to the private nature of the births.

The public nature of the paternity dispute with Ashley St. Clair marks a departure from the previously private arrangements Musk had with the mothers of his other children, bringing the topic of his large family back into the spotlight with a focus on legal and custody challenges.

Beyond the Names: The Unique Dynamics of the Musk Family

The sheer size and unconventional structure of Elon Musk's family have sparked global conversations about modern parenthood, genetics, and the responsibilities of a public figure. Musk himself has often framed his large family as a contribution to solving the "underpopulation crisis," a topic he frequently discusses in interviews and on his social media platform, X.

The Naming Conventions and Cultural Impact

The names of Musk's children, particularly those with Grimes, have become a cultural phenomenon. Names like X Æ A-Xii and Exa Dark Sideræl are not just unique; they are philosophical statements. 'X' is a variable, 'Æ' is the elven spelling of AI, and 'A-Xii' is a nod to the Lockheed SR-71 Blackbird, a favorite aircraft. This trend of futuristic, tech-inspired nomenclature highlights the influence of his professional life on his personal decisions.

Custody and Privacy Challenges

For a man who champions free speech and public discourse, Musk has maintained a high degree of privacy regarding his children. However, the private life of the family has occasionally spilled into the public sphere. The legal process for Vivian Jenna Wilson to change her name and gender, and the recent, highly publicized custody battle with Ashley St. Clair, show the inherent challenges of maintaining privacy when you are one of the world's most famous people.

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The children with Shivon Zilis, who share a professional connection through Neuralink, also represent a unique co-parenting dynamic within the high-stakes environment of a billion-dollar tech company.

In summary, Elon Musk's family is a complex and evolving entity. With 14 children from four mothers, the family dynamics are unprecedented in the modern celebrity world. From the tragic loss of his first son to the recent, highly public birth of Romulus, the story of the "Musk-eteers" is a continuous, fascinating narrative that remains a constant subject of interest for those following the life of the world's wealthiest man.