The Expanding Musk Dynasty: A Full Chronological List Of Elon Musk's 14 Children And Their Mothers

The world's wealthiest and most ambitious entrepreneur, Elon Musk, is known for his massive ventures in space, electric vehicles, and artificial intelligence, but his personal life is equally expansive. As of today, December 10, 2025, the Tesla and SpaceX CEO is a father to a rapidly growing family, with the official count of his children recently climbing to 14, welcomed with four different women. This recent surge in his family tree, including new additions announced in late 2024 and early 2025, has placed the Musk dynasty firmly in the spotlight, sparking global curiosity about the names, ages, and mothers of his 'Musk-eteers'.

The continuous updates to the Musk family ledger reflect the billionaire's well-known philosophy on population and human expansion, making his personal life a fascinating case study in modern parenthood and high-profile family dynamics. This article provides a definitive, chronological breakdown of every child, their mother, and the latest details known about them, from the eldest twins to the most recently announced arrivals.

Elon Reeve Musk: A Brief Biography and Profile

Elon Reeve Musk, born on June 28, 1971, in Pretoria, South Africa, is arguably the most influential technology entrepreneur of the 21st century.

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• Full Name: Elon Reeve Musk
• Date of Birth: June 28, 1971
• Place of Birth: Pretoria, South Africa
• Age (as of 2025): 54
• Primary Companies: Tesla (CEO), SpaceX (CEO & CTO), X (formerly Twitter, Owner & CTO), xAI (Founder), Neuralink (Co-founder)
• Education: University of Pennsylvania (B.A. in Physics, B.S. in Economics)
• Current Net Worth: His wealth has fluctuated dramatically, but he remains the world's richest man, with his net worth reaching between $400 billion and $500 billion in late 2024 and 2025, making him the first person to reach the $400 billion milestone.
• Residence: Austin, Texas, USA

Musk's career began with Zip2, followed by the co-founding of PayPal. His subsequent ventures—Tesla, revolutionizing electric vehicles, and SpaceX, aiming for interplanetary travel—cemented his status as a visionary.

The First Chapter: Children with Justine Wilson

Elon Musk’s first wife, Canadian author Justine Wilson, is the mother of his first six children. The couple was married from 2000 to 2008. Their journey into parenthood began with tragedy, but they later expanded their family significantly through IVF.

1. Nevada Alexander Musk (2002)

Nevada Alexander was Musk’s firstborn son, welcomed in 2002. Tragically, he died from Sudden Infant Death Syndrome (SIDS) at just 10 weeks old.

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2. Vivian Jenna Wilson (formerly Xavier Musk) & 3. Griffin Musk (Twins, Born 2004)

Determined to continue their family, Musk and Wilson welcomed twins, Griffin and Xavier, via in vitro fertilization (IVF) in April 2004.

In 2022, one of the twins, Xavier, legally changed her name to Vivian Jenna Wilson, adopting her mother's maiden name and affirming her gender identity.

4. Kai Musk, 5. Saxon Musk, & 6. Damian Musk (Triplets, Born 2006)

Two years after the twins, the couple welcomed triplets—Kai, Saxon, and Damian—also conceived through IVF.

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These five living children with Justine Wilson range in age from their late teens to early twenties, marking the beginning of the Musk family tree.

The Futuristic Trio: Children with Grimes

Musk’s relationship with Canadian musician Claire Boucher, known professionally as Grimes, resulted in three children, all known for their famously unique and futuristic names. Their relationship began in 2018 and has been an on-again, off-again dynamic.

7. X Æ A-Xii Musk (X, Born 2020)

Born in May 2020, X Æ A-Xii (pronounced "Ex Ash A Twelve") immediately became a global sensation due to his name. He is affectionately nicknamed "X."

8. Exa Dark Sideræl Musk (Y, Born 2021)

Exa Dark Sideræl, nicknamed "Y," was born in December 2021 via surrogate. Her full name combines a reference to the supercomputing term "exa," the "dark side" of the unknown, and "sideræl," a more elven spelling of sidereal (relating to stars).

9. Techno Mechanicus Musk (Tau, Born 2022)

The existence of a third child with Grimes, named Techno Mechanicus and nicknamed "Tau," was kept private until it was revealed in Walter Isaacson's biography of Elon Musk. He was born sometime in 2022.

The AI-Inspired Additions: Children with Shivon Zilis

Shivon Zilis, a high-ranking executive at Musk's neurotechnology company, Neuralink, and a director at OpenAI, shares three children with the billionaire. This partnership, which became public knowledge in 2022, underscores the blending of Musk's professional and personal life.

10. Strider & 11. Azure (Twins, Born 2021)

Musk and Zilis secretly welcomed twins, Strider and Azure, in November 2021, just weeks before his daughter Exa Dark Sideræl was born via surrogate to Grimes.

12. Arcadia & 13. Seldon Lycurgus (Child, Born 2024)

In a major update to the Musk family tree, a third child with Shivon Zilis was welcomed in 2024. While some reports initially suggested twins named Arcadia and Seldon Lycurgus, the most recent announcements simply confirm the birth of another child, bringing the total number of children shared by Musk and Zilis to three.

This recent addition further solidifies Musk's commitment to growing his family, a theme he has often discussed publicly in the context of global population decline.

The Latest Arrival: Child with Ashley St. Clair

The most recent and unexpected addition to the Musk family was announced in early 2025, confirming a fourth mother in the dynasty.

14. Romulus Musk (Born 2024)

Conservative author and influencer Ashley St. Clair announced in February 2025 that she had given birth to a son with Elon Musk in the fall of 2024. The child, named Romulus, marks the 14th child for the technology mogul.

The surprise announcement of Romulus adds another layer of complexity and intrigue to the billionaire's personal life, confirming a new chapter in the ever-expanding Musk family saga.

Topical Authority: The Expanding Musk Family Tree and LSI Entities

The Musk family tree is a complex structure involving four distinct women and a total of 14 children, 13 of whom are currently living. This extensive family dynamic has been a constant source of public fascination, often intersecting with Musk’s professional endeavors.

The mothers—Justine Wilson, Grimes, Shivon Zilis, and Ashley St. Clair—each represent different periods and facets of the entrepreneur's life. Wilson, a Canadian author, was the mother of his first six children and established the use of IVF in their family planning. Grimes, the experimental musician, is associated with the most famously unusual names—X Æ A-Xii, Exa Dark Sideræl, and Techno Mechanicus—which reflect a blend of technology and mythology.

Shivon Zilis, an executive at Neuralink and OpenAI, links the family directly to Musk's AI and neurotechnology ambitions. Her twins, Strider and Azure, and their youngest sibling were born in quick succession. The most recent mother, conservative influencer Ashley St. Clair, brings another unexpected element into the family's public narrative with the birth of Romulus.

The sheer number of children, coupled with the unique naming conventions and the high-profile nature of the parents, ensures that the "Musk-eteers" will remain a central topic of discussion. The family’s narrative touches on themes of population growth, gender identity (with Vivian Jenna Wilson’s name change), and the ethical implications of modern high-tech family planning, providing a continuous stream of relevant and fresh content for the public to follow.