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The Definitive List Of Elon Musk’s 14 Children: Names, Mothers, And The Meaning Behind ‘Seldon Lycurgus’ And ‘Romulus’

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The family life of billionaire entrepreneur Elon Musk has become as globally scrutinized as his ventures into space exploration and electric vehicles. As of late 2025, the Tesla and SpaceX CEO is a father to a publicly known total of 14 children, a number that has rapidly expanded and evolved over the last few years. This updated list provides the definitive, chronological breakdown of every one of his children, the four mothers he shares them with, and the fascinating, often controversial, stories behind their unique names.

The names range from the traditional to the highly unconventional, reflecting Musk's known penchant for science fiction, ancient history, and complex mathematical or technological concepts. The most recent additions, Seldon Lycurgus and Romulus, reported in early 2025, continue this tradition, ensuring his children remain a topic of global curiosity and discussion.

The Four Mothers and the Complete List of 14 Children (A Chronological Profile)

Elon Musk’s large family is shared with four different women: his first wife, Canadian author Justine Wilson; musician and artist Grimes (Claire Elise Boucher); Neuralink executive Shivon Zilis; and conservative influencer Ashley St. Clair. Each relationship has produced a unique set of names, often drawing from mythology, technology, and futuristic concepts.

Justine Wilson: The First Six Children

Justine Wilson, a Canadian author, was Musk's first wife. They married in 2000 and had six children together before divorcing in 2008.

  • Nevada Alexander Musk: Born in 2002, Nevada tragically passed away from SIDS (Sudden Infant Death Syndrome) at 10 weeks old.
  • Griffin Musk and Vivian Jenna Wilson (Twins): Born in 2004 via IVF. Vivian, formerly named Xavier, legally changed her name in 2022, choosing to take her mother's maiden name.
  • Kai Musk, Saxon Musk, and Damian Musk (Triplets): Born in 2006 via IVF. These names are more traditional but still carry a sense of classic strength.

Grimes (Claire Elise Boucher): The Conceptual Trio

Musician Grimes and Musk began dating in 2018 and are known for giving their three children some of the most unconventional names in celebrity history. Their relationship is characterized by a shared love of sci-fi and esoteric language.

  • X Æ A-Xii (Nickname: 'X'): Born in May 2020. The original name was X Æ A-12, but was slightly modified to comply with California law. The name’s meaning is highly conceptual: 'X' is the unknown variable; 'Æ' is the elven spelling of AI (Artificial Intelligence/Love); and 'A-Xii' is a nod to the Lockheed SR-71 Blackbird’s precursor plane, the A-12.
  • Exa Dark Sideræl (Nickname: 'Y'): Born in December 2021 via surrogate. The name is equally complex: 'Exa' refers to the supercomputing term exaFLOPS; 'Dark' is a reference to the unknown, specifically dark matter; and 'Sideræl' is an "elven" spelling of sidereal, meaning relating to or determined by stars.
  • Techno Mechanicus (Nickname: 'Tau'): Born in June 2022, his existence was revealed in Musk's 2023 biography. The name, often shortened to 'Tau', is a clear nod to technology and engineering, fitting the family's theme.

Shivon Zilis: The Neuralink Quadruplets

Shivon Zilis, a high-ranking executive at Musk's neurotechnology company, Neuralink, shares four children with the billionaire. Their relationship became public in 2022 with the news of their twins, and has continued to expand in 2025.

  • Strider and Azure (Twins): Born in November 2021, just weeks before Exa Dark Sideræl was born via surrogate to Grimes.
  • Arcadia: The third child with Zilis.
  • Seldon Lycurgus: Reported in February 2025 as the 14th child at the time of the announcement. This name is a deep dive into science fiction and ancient Greek philosophy.

Ashley St. Clair: The Mythical Addition

In a highly publicized report in April 2025, conservative influencer Ashley St. Clair claimed to have welcomed a child with Musk, bringing the total number of his children to 14. This child's paternity has been a subject of public dispute, but the name was revealed by the mother.

  • Romulus St. Clair: Reported in April 2025. The name Romulus is instantly recognizable from Roman mythology, referring to the legendary co-founder and first king of Rome, Romulus, who was raised by a she-wolf alongside his twin brother, Remus.

Unpacking the Meaning of the Most Recent and Unusual Names

The names of Musk’s children with Grimes and the newest additions with Shivon Zilis and Ashley St. Clair are not random; they are carefully chosen entities that reflect the parents' interests in futurology, science, and classical texts. Understanding these names is key to understanding the narrative of the 'Musk-eteers'.

The Futuristic Trilogy: X, Y, and Tau

The children with Grimes—X Æ A-Xii, Exa Dark Sideræl, and Techno Mechanicus—form a trilogy rooted in technology and the cosmos. The names function almost like code, designed to provoke thought about the future of humanity and language itself. The change from the original X Æ A-12 to X Æ A-Xii was a minor adjustment to comply with local birth certificate laws, replacing the numeral with Roman numerals, but the conceptual meaning remained intact.

The 'Y' in Exa Dark Sideræl is a direct reference to exaFLOPS, a unit of computing speed, tying the child's identity to the cutting edge of supercomputing power. Sideræl, meaning "of the stars," anchors the name in the final frontier that Musk is so dedicated to conquering with SpaceX.

Seldon Lycurgus: A Blend of Sci-Fi and Ancient Law

The name Seldon Lycurgus, the newest addition with Shivon Zilis, is perhaps the most intellectually dense of the recent names. The name Seldon is widely believed to be a tribute to Hari Seldon, a pivotal character in Isaac Asimov's science fiction masterpiece, the Foundation series. Hari Seldon is a mathematician who develops 'psychohistory,' a theoretical science that can predict the future of large populations.

Lycurgus, meanwhile, is a figure from ancient Greek history, a legendary lawgiver of Sparta. He is credited with establishing the military-focused, communal social structure that defined the city-state. This combination—a futuristic mathematician and an ancient lawgiver—perfectly encapsulates Musk’s vision of a highly structured, technologically advanced future.

Romulus: The Mythological Founder

The name Romulus, associated with the child with Ashley St. Clair, returns to classical mythology, a theme also seen in the name Damian (a triplet). Romulus is the legendary founder of Rome, a figure whose story involves both creation and conflict. This name, meaning "Citizen of Rome," continues the pattern of giving his children names of historical or legendary figures who were founders or great thinkers.

The Impact of Unconventional Naming on Topical Authority and Public Discourse

Elon Musk's choice of names is not merely a personal preference; it’s a powerful tool that drives massive topical authority and public engagement. Each announcement generates millions of searches for terms like "X Æ A-Xii pronunciation," "Exa Dark Sideræl meaning," and "Seldon Lycurgus origin."

This strategy of unconventional naming serves to:

  • Maintain Curiosity: Names like Techno Mechanicus and Exa Dark Sideræl ensure the children remain a perennial topic of discussion, tying the Musk family narrative to themes of futurism and science.
  • Establish a Brand Identity: The names reinforce the public perception of Elon Musk as a figure obsessed with science, space, and the future of civilization.
  • Create LSI Linkage: For SEO purposes, the names automatically link the Musk entity to high-value, high-authority topics like Artificial Intelligence (AI), supercomputing (exaFLOPS), and classical mythology (Romulus, Lycurgus), significantly boosting the topical relevance of any content written about the family.

From the tragic loss of Nevada Alexander to the highly conceptual 'X' and the most recent, deeply historical 'Romulus' and 'Seldon Lycurgus,' the names of Elon Musk’s 14 children tell a unique and ongoing story about one of the world’s most influential figures and his vision for the future.

elon musk child name
elon musk child name

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