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The 14 Children Of Elon Musk: A Complete List Of Names, Mothers, And The Wild Meanings Behind 'X Æ A-Xii' And 'Seldon Lycurgus'

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Elon Musk’s family tree continues to expand, making headlines not just for its size but for the incredibly unique names given to his children. As of late 2024 and early 2025, the Tesla and SpaceX CEO is reported to have 14 children with four different women, a number that has been recently updated with the confirmed arrival of new babies. This deep dive provides the most current, comprehensive list of all his children, their mothers, and the fascinating—sometimes controversial—stories behind their names.

The sheer number and the unconventional naming choices, which often reference science fiction, ancient history, or technology, have cemented Musk’s status as a figure who embraces the extraordinary in every aspect of his life, including fatherhood. This article breaks down the full roster of the 'Musk-eteers' and the powerful women who are their mothers.

The Mothers and Their Children: A Complete Biography List (Updated 2025)

Elon Musk has had children with four partners, ranging from his first wife to high-profile executives and social media influencers. This section provides a list of the mothers and the children they share with the tech magnate.

1. Justine Wilson (6 Children)

Justine Wilson, a Canadian author specializing in dark urban fantasy novels, was Elon Musk's first wife. She is the mother of his first six children.

  • Nevada Alexander Musk: Born in 2002. Tragically died of Sudden Infant Death Syndrome (SIDS) at 10 weeks old.
  • Griffin Musk: Born in 2004 (Twin).
  • Vivian Jenna Wilson: Born in 2004 (Twin). Vivian legally changed her name and requested to sever ties with her father in 2022.
  • Kai Musk: Born in 2006 (Triplet).
  • Saxon Musk: Born in 2006 (Triplet).
  • Damian Musk: Born in 2006 (Triplet).

2. Grimes (Claire Boucher) (3 Children)

Grimes is a Canadian musician, singer, songwriter, and record producer known for her unique blend of electronic, pop, and R&B. Their relationship is characterized by its avant-garde nature, reflected in their children's names.

  • X Æ A-Xii Musk ("X"): Born in 2020. Originally named X Æ A-12, the name was changed to comply with California law, which does not allow numbers in a legal name.
  • Exa Dark Sideræl Musk ("Y"): Born via surrogate in December 2021.
  • Techno Mechanicus Musk ("Tau"): Born in June 2022. His name was revealed in Walter Isaacson's 2023 biography of Musk.

3. Shivon Zilis (3 Children)

Shivon Zilis is a high-level executive and artificial intelligence expert, serving as the Director of Operations and Special Projects at Neuralink, one of Musk’s companies. She also previously served on the board of OpenAI.

  • Strider Zilis Musk: Born in November 2021 (Twin).
  • Azure Zilis Musk: Born in November 2021 (Twin).
  • Seldon Lycurgus Musk: Born in 2025. His birth was announced by Zilis in March 2025.

4. Ashley St. Clair (2 Children)

Ashley St. Clair is an American conservative political commentator, author, and social media influencer. She publicly claimed to have had a child with Musk in February 2025.

  • Romulus St. Clair: Born in Fall 2024. The name was revealed amidst a paternity dispute, though reports later confirmed paternity.
  • Second Child: While sources confirm Musk has 14 children, the name of the second child with St. Clair has not been publicly confirmed as of this writing.

Decoding the Unconventional: Meanings and Pronunciations

The names chosen by Musk and Grimes, in particular, are a labyrinth of technical references, ancient languages, and philosophical concepts. The newest additions with Shivon Zilis and Ashley St. Clair also follow this pattern of grand, historical, or science-fiction-inspired nomenclature.

X Æ A-Xii: The Name That Broke the Internet

The name of Musk's first child with Grimes is perhaps the most famous and difficult to pronounce. The couple broke down the meaning, which is a mix of mathematics, technology, and personal history.

  • X: The unknown variable.
  • Æ: An "elven spelling" of AI (artificial intelligence) and/or the word "love" in a few languages.
  • A-Xii: A reference to the Lockheed A-12 reconnaissance aircraft (the precursor to the SR-71), which they call their favorite aircraft, and a nod to the song "Archangel." The '12' was changed to the Roman numeral 'Xii' to make the name legal.
  • Pronunciation: Grimes has stated the name is pronounced "Ex-Ay-A-Twelve" or "Ex Ash A Twelve."

Exa Dark Sideræl Musk: A Naming Masterpiece

Known by the nickname "Y," Exa Dark Sideræl's name is equally complex, weaving together high-performance computing and celestial concepts.

  • Exa: A reference to ExaFLOPS, a term for the ability to perform one quintillion floating-point operations per second in computing—a nod to the cutting edge of technology.
  • Dark: References the unknown, specifically dark matter, which is the true mystery of the universe.
  • Sideræl: Pronounced "sigh-deer-ee-elle," this is a more elven spelling of "sidereal," meaning relating to or determined by the stars.

Techno Mechanicus ("Tau"): The Unveiled Son

The third child with Grimes, "Tau" (a nickname often used for a variable in mathematics and science), was a secret until the 2023 biography. The full name continues the tech theme.

  • Techno: Likely a reference to the electronic music genre, a major part of Grimes's artistic identity.
  • Mechanicus: A term that strongly suggests a link to the science-fiction universe of Warhammer 40,000, which is known to be a favorite of Grimes.
  • Tau: The Greek letter ($\tau$) often used in physics to represent time constants or in mathematics as a circle constant.

The Newest Additions: Seldon Lycurgus and Romulus

The most recent publicly known additions to the Musk family, Seldon Lycurgus and Romulus, show that the tradition of naming children after legendary or futuristic figures is still going strong in 2025.

Seldon Lycurgus Musk: A Sci-Fi and Ancient Greek Tribute

Seldon Lycurgus, the newest child with Shivon Zilis, combines two distinct historical and fictional influences, demonstrating a deep interest in the foundations of civilization and the future.

  • Seldon: A clear reference to Hari Seldon, the visionary mathematician and founder of psychohistory in Isaac Asimov's seminal science fiction series, *Foundation*.
  • Lycurgus: Inspired by the legendary lawgiver of Sparta, who is credited with establishing the militaristic and disciplined society of ancient Laconia.

Romulus St. Clair: The Founder of Rome

The name Romulus, shared with conservative influencer Ashley St. Clair, is a direct reference to one of the most famous legends in Western history.

  • Romulus: In Roman mythology, Romulus and his twin brother Remus were the legendary founders of Rome. The twins were famously abandoned and suckled by a she-wolf, a powerful image of resilience and destiny.
  • The name choice is fitting for the son of a man who has often spoken of building new civilizations, both on Earth and on Mars.

The growing family of Elon Musk is a clear reflection of his public ambition: to expand the human race and establish a multi-planetary future. The names of his children—from the classic to the completely technological—serve as a symbolic bridge between ancient history, science fiction, and the cutting edge of engineering and AI, defining a legacy that is as complex and debated as the man himself.

what are elon musk's kids names
what are elon musk's kids names

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