The Musk Legacy: A Comprehensive List Of Elon Musk's 14 Children And Their Four Mothers (2025 Update)

The question of "How many children does Elon Musk have?" is a constantly evolving one, and as of late 2024 and into 2025, the official count has reached a staggering 14 known children. This makes the billionaire tech mogul one of the most prolific fathers in the public eye, a fact that aligns directly with his outspoken views on the global declining birth rate and the necessity for human civilization to have more children. The latest, and most surprising, additions to the Musk family tree have brought the total number to 14, born to four different women, sparking global headlines and intense curiosity about the full Musk legacy.

The recent confirmation of his 14th child with a new mother, conservative political commentator Ashley St. Clair, has cemented his position as a leading—and literal—proponent of the pro-natalism movement. This comprehensive, updated list details every known child, their mother, and the unique story behind their names, providing the freshest information available in December 2025.

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

Elon Musk's family is a complex tapestry woven across two decades, four partners, and multiple births, including twins and triplets. The list below is organized chronologically by the mother, detailing the 14 known "Musk-eteers."

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The Children with Justine Wilson (5 Children)

Justine Wilson, a Canadian author and Musk’s first wife, is the mother of his first six children, though tragically, only five survive today. They were married from 2000 to 2008 and used IVF to conceive their multiple births.

• Nevada Alexander Musk (2002–2002): Nevada was Musk's first child. Tragically, he died of Sudden Infant Death Syndrome (SIDS) at just 10 weeks old. This loss was a profound event in Musk’s life.
• Griffin Musk and Vivian Jenna Wilson (Twins, Born 2004): Born via in vitro fertilization (IVF), Griffin and Vivian are the oldest surviving children. Vivian, who was born Xavier, legally changed her name and gender identity in 2022, opting to take her mother's maiden name, Wilson, and stating she no longer wishes to be related to her father.
• Kai Musk, Saxon Musk, and Damian Musk (Triplets, Born 2006): The trio was also conceived through IVF. They are now young adults, largely maintaining a private life outside of the public spotlight.

The Children with Claire "Grimes" Boucher (3 Children)

Grimes, a Canadian musician and artist, is known for her futuristic and avant-garde style, which is reflected in the famously unique names of her three children with Musk. Their relationship began in 2018 and has been on-again, off-again.

• X Æ A-Xii (Born May 2020): Often referred to as "X," the name was initially X Æ A-12, but was legally changed due to California law prohibiting numbers in a legal name. Musk and Grimes explained the name's meaning: 'X' for the unknown variable, 'Æ' for the elven spelling of AI (artificial intelligence) or love, and 'A-Xii' for the Archangel-12, a precursor to the SR-71 Blackbird aircraft.
• Exa Dark Sideræl Musk (Born December 2021): Known as "Y," Exa Dark Sideræl was born via surrogate. Her name is equally complex: 'Exa' refers to the supercomputing term exaFLOPS, 'Dark' represents the unknown, and 'Sideræl' is a "more elven" spelling of sidereal, meaning "of the stars."
• Techno Mechanicus (Born 2023): Known as "Tau" (after the Greek letter τ), the birth and name of this third child were revealed in a new biography of Musk. The name, which translates roughly to 'Mechanical Technology,' continues the theme of advanced concepts and mathematics.

The Children with Shivon Zilis (4 Children)

Shivon Zilis is a top executive at Neuralink, one of Musk’s companies, and a significant figure in the artificial intelligence and venture capital world. Their relationship was revealed in 2022 when court documents confirmed the birth of their first set of twins.

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• Strider and Azure (Twins, Born November 2021): These twins were born just weeks before Grimes' second child, Exa Dark Sideræl, via surrogate. The children were given Zilis’ surname as part of their names.
• Arcadia and Seldon Lycurgus (Born 2024): The birth of a third and a fourth child with Zilis was reported in late 2024, bringing the total of their children together to four. The latest, Seldon Lycurgus, was reported to be born in early 2024, further expanding the Musk family and highlighting his commitment to the concept of a large family.

The Child with Ashley St. Clair (1 Child)

In one of the most recent and public revelations, conservative political commentator and influencer Ashley St. Clair confirmed in late 2024 that Musk is the father of her infant son. This news officially brought the count of mothers to four and the total number of children to 14.

• Romulus (Born September 2024): Following media speculation, a paternity test confirmed Musk as the father of St. Clair’s son, Romulus. The name Romulus, shared with the legendary founder of Rome, continues a theme of historical or mythological significance in the Musk children's names.

The Driving Force: Elon Musk's Stance on Birth Rates and Civilization

The sheer size of Elon Musk's family is not merely a personal matter; it is a direct reflection of his deeply held and publicly vocalized philosophical views on a global crisis. Musk is arguably the most prominent figure championing the pro-natalism movement, which advocates for higher birth rates to sustain human population and economic growth.

Musk has repeatedly stated that he believes the rapidly declining birth rate is one of the biggest risks facing human civilization—even greater than global warming or asteroid impacts. He argues that if people do not have more children, civilization will eventually "crumble." This belief system provides the core context for his personal life choices, transforming his family into a statement about the future of humanity. His actions, therefore, are seen by many as a literal embodiment of his philosophy: "Make kids, not war."

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This perspective adds significant topical authority to the discussion of his children. It positions his large family not as a quirk of celebrity, but as a deliberate, ideological decision aimed at encouraging others to address what he views as a looming demographic collapse. His personal choices are thus interwoven with his public persona as a futurist and a visionary concerned with the long-term survival of the species.

The Unique Naming Conventions: Technology, Mythology, and Language

One of the most fascinating aspects of the Musk children is the highly unusual and complex naming conventions, particularly for the children he shares with Grimes. These names are not random; they are rich with references to advanced technology, space exploration, and esoteric language, reflecting the interests of their parents.

• Technological and Scientific Entities: Names like Exa Dark Sideræl (referencing exaFLOPS) and Techno Mechanicus (mechanical technology) directly link to Musk's world of supercomputing, AI, and engineering. The original 'A-12' in X Æ A-Xii was a nod to the Archangel-12 reconnaissance plane, a symbol of speed and stealth.
• Mythological and Historical Allusions: The latest confirmed son, Romulus, is named after one of the mythical founders of Rome. This choice suggests a theme of building and founding, consistent with Musk’s vision of building a multi-planetary civilization. Similarly, Seldon Lycurgus has historical and intellectual weight, with Lycurgus being a legendary Spartan lawgiver.
• Linguistic Complexity: The use of the character 'Æ' in X Æ A-Xii and the 'elven' spelling in Sideræl reflects a deep dive into linguistic and cultural esoterica, making the names a puzzle for the public to decode.

These names serve as a powerful secondary narrative to the family's size, underscoring the idea that the Musk children are intended to be a new generation of thinkers and builders, named after the very concepts their father champions.

The Future of the Musk Family Tree

With 14 children and a clear, public mission to combat the declining birth rate, speculation about future additions to the Musk family is inevitable. Musk has shown a willingness to embrace fatherhood across different relationships and through various means, including IVF and surrogacy. His continued public statements suggest that his personal mission to expand his family is far from over.

The narrative of Elon Musk’s family is a powerful, real-time case study in modern parenthood, genetics, and philosophy. It is a story of a man whose personal life is inextricably linked to his grand, public vision for the future of humanity, making the question of "How many children does Elon Musk have?" one of the most frequently searched and fascinating questions in the world today.