The Updated List Of Elon Musk's 14 Children: Names, Mothers, And The Newest Addition 'Romulus' (2025)

The family life of tech mogul Elon Musk continues to be a subject of intense global fascination, particularly as the number of his children—and the sheer originality of their names—grows. As of the most recent updates in early 2025, the Tesla and SpaceX CEO is the father of a reported 14 children with four different women, a number that has been dramatically revised following a series of quiet births and public confirmations in late 2024 and early 2025. This article provides the definitive, up-to-the-minute list of all 14 children, their mothers, and the fascinating stories behind their unconventional names.

The latest addition to the Musk family, a son named Romulus, was confirmed in February 2025, underscoring Musk’s public advocacy for increasing the world's birth rate to avert a "population collapse." The continuous expansion of his family, coupled with the increasingly unique monikers, has cemented his status not just as a business titan, but as one of the most unconventional public figures of the modern era.

Elon Musk: A Brief Biography and Profile

Elon Reeve Musk, born on June 28, 1971, in Pretoria, South Africa, is one of the world's most influential and wealthiest individuals. His entrepreneurial drive has fundamentally reshaped multiple industries, from finance to space exploration.

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• Full Name: Elon Reeve Musk
• Date of Birth: June 28, 1971
• Place of Birth: Pretoria, South Africa
• Nationality: South African, Canadian, American
• Parents: Errol Musk (Engineer), Maye Musk (Model/Dietitian)
• Key Companies & Roles: CEO of Tesla, CEO/CTO of SpaceX, Owner/CTO of X (formerly Twitter), Founder of The Boring Company, Co-founder of Neuralink and OpenAI.
• Education: University of Pennsylvania (B.A. in Physics and B.S. in Economics)

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

Elon Musk has fathered 14 children with four women: his first wife, Justine Wilson; musician Grimes (Claire Boucher); Neuralink executive Shivon Zilis; and conservative journalist Ashley St. Clair. The family tree is notable for its size, the closeness in age of several children, and the highly unusual names chosen by the parents.

Children with Justine Wilson (6 Children)

Musk’s first wife, Canadian author Justine Wilson, is the mother of his first six children. The couple married in 2000 and divorced in 2008. Their journey began with tragedy and continued with the birth of a set of twins and then a set of triplets.

• Nevada Alexander Musk (Born 2002): The couple's first child tragically died of Sudden Infant Death Syndrome (SIDS) at just 10 weeks old.
• Griffin Musk (Born 2004): One of the twin sons, born via in vitro fertilization (IVF).
• Vivian Jenna Wilson (Born 2004): Griffin's twin. Vivian, who was born Xavier Alexander Musk, legally changed her name in 2022 to reflect her gender identity and to sever ties with her father. The name change to Vivian Jenna Wilson adopted her mother’s maiden name.
• Kai Musk (Born 2006): One of the triplet sons, born via IVF.
• Saxon Musk (Born 2006): One of the triplet sons, born via IVF.
• Damian Musk (Born 2006): One of the triplet sons, born via IVF.

Children with Grimes (3 Children)

Musk’s relationship with Canadian musician Claire Boucher, known as Grimes, produced three children, all famous for their symbolic and esoteric names. The couple's relationship was on-again, off-again, with the third child's existence only revealed in a 2023 biography.

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• X Æ A-12 Musk (Born May 2020): Nicknamed "X." The name was later changed to X Æ A-Xii due to California state laws prohibiting numbers in a legal name. The name is a blend of the letter X, the elven spelling of AI (Æ), and the A-12 Archangel reconnaissance aircraft.
• Exa Dark Sideræl Musk (Born December 2021): Nicknamed "Y," this daughter was born via a surrogate. Her name is a reference to the supercomputing term "exaFLOPS," the "dark" unknown, and "sideræl," a more elven spelling of sidereal (relating to the stars).
• Techno Mechanicus (Born 2023): Nicknamed "Tau." The existence of a third child was revealed in Walter Isaacson’s 2023 biography of Musk. While the full name is occasionally reported as Techno Mechanicus, the nickname Tau has also been cited, maintaining the family's tradition of highly technical and unique naming.

Children with Shivon Zilis (4 Children)

Neuralink executive Shivon Zilis is the mother of four of Musk's children, a significant update from the initial report of twins. The births of Strider and Azure were kept private until court documents were revealed in 2022, and the existence of the two younger children was confirmed in late 2024.

• Strider (Born November 2021): One of the first set of twins with Zilis.
• Azure (Born November 2021): The twin sister of Strider. The twins were born mere weeks before Exa Dark Sideræl.
• Arcadia (Born 2024): A daughter whose existence, along with her younger brother, was revealed in 2024, confirming Zilis is the mother of four.
• Seldon Lycurgus (Born 2024): A son, whose name continues the trend of classical and science-fiction-inspired names.

Children with Ashley St. Clair (1 Child)

The most recent addition to the Musk family was confirmed in early 2025, marking the fourth mother of his children. Ashley St. Clair, a conservative journalist and influencer, announced the birth of her son, Romulus, who was born in September 2024.

• Romulus (Born September 2024): The newest son, whose name is a direct reference to Romulus, the legendary founder of Rome. The announcement of his birth came amidst a paternity dispute, which St. Clair publicly confirmed in February 2025.

The Phenomenon of Musk’s Unique Naming Conventions

The names of Elon Musk’s children are not simply chosen for their sound; they are deeply rooted in his personal interests, which span science fiction, technology, philosophy, and classical history. This unique approach to naming has become a key part of his public persona, driving significant media attention and topical authority on the subject of celebrity offspring.

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A Blend of Tech, History, and Mythology

The most famous example is, of course, X Æ A-12. The name is a direct homage to the Lockheed A-12 reconnaissance aircraft, which Musk has a known fascination with, symbolizing speed and a lack of weapons. The "Æ" is a nod to the elven spelling of "AI" (Artificial Intelligence) or "love." This combination highlights his dual passion for aerospace and computational technology.

Similarly, Exa Dark Sideræl is a complex name. "Exa" refers to exaFLOPS, a unit of computing speed, while "Sideræl" connects to the cosmos and the stars—a clear link to his work with SpaceX. The names are conversation starters, intentionally or not, that reflect a vision of the future.

Classical and Historical References: Romulus and Seldon

The newest names, Romulus and Seldon Lycurgus, draw heavily from classical and literary history. Romulus is one of the twin founders of Rome in Roman mythology, a powerful symbol of foundational new beginnings.

The name Seldon is a likely reference to Hari Seldon, a fictional mathematician in Isaac Asimov's *Foundation* series, a seminal work of science fiction that Musk frequently cites as an influence. Lycurgus, on the other hand, is the legendary lawgiver of Sparta, further cementing the theme of building and shaping civilization—a theme central to Musk’s public commentary on birth rates and existential risk.

The "Population Collapse" Narrative

The growing size of Musk’s family is often viewed through the lens of his public warnings about the declining global birth rate. Musk has repeatedly stated that a "population collapse" is a greater threat to civilization than global warming.

His actions—fathering 14 children with four mothers—are seen by many as a practical demonstration of his belief that intelligent people should have more children to ensure humanity's future. The very public nature of his expanding family, particularly the recent, quiet additions with Shivon Zilis and the confirmed birth with Ashley St. Clair, keeps this critical societal debate at the forefront of the news cycle, blending his personal life with his geopolitical and philosophical views.

Conclusion: The Ever-Evolving Musk Family Tree

The Musk family tree, now numbering 14 children with four mothers as of early 2025, is a dynamic and closely watched narrative. From the tragic loss of his first son, Nevada, to the gender transition and name change of Vivian, and the highly publicized, cryptic names of his children with Grimes, every birth adds a new layer to the story.

The recent confirmations of the four children with Shivon Zilis and the newest son, Romulus, with Ashley St. Clair, highlight not only the tech billionaire's commitment to his vision of a burgeoning human population but also his unconventional approach to family life. As Musk continues to influence global technology and culture, the unique names and stories of his many children—the "Musk-eteers"—will undoubtedly remain a topic of intense interest for years to come.