The Complete List Of Elon Musk's 14 Children: Names, Ages, And The Unbelievable Meanings Behind 'X Æ A-Xii' And 'Seldon'

As of late 2024, the world’s most prolific tech mogul, Elon Musk, is the father of a confirmed 14 children with four different women, a number that has rapidly expanded in recent years and continues to capture global attention. The sheer size of his family, coupled with the highly unconventional names given to some of his 'Musk-eteers,' has made his personal life a source of intense public fascination and curiosity. This updated, in-depth guide provides the complete, chronological list of his children, their mothers, and the fascinating, often bizarre, stories behind their unique monikers. The list of names is a blend of traditional, classical, and futuristic, reflecting Musk's wide-ranging interests in technology, science fiction, and philosophy. From the tragic loss of his firstborn to the recent additions in 2024, the Musk family tree is a complex and evolving saga that perfectly mirrors the unpredictable nature of the man at its center.

Elon Musk: A Brief Biographical Profile and Family Timeline

Elon Reeve Musk is a business magnate, investor, and co-founder/CEO of several groundbreaking companies, including SpaceX, Tesla, Neuralink, and The Boring Company. Born in Pretoria, South Africa, he moved to Canada at age 17 and later to the United States. His personal life, particularly his relationships and expanding family, has been a continuous subject of public interest. Musk has fathered 14 children with four different partners: his first wife, Canadian author Justine Wilson (now Justine Musk); musician Grimes (Claire Boucher); Neuralink executive Shivon Zilis; and conservative commentator Ashley St. Clair.

• Full Name: Elon Reeve Musk
• Born: June 28, 1971 (Age 53 as of late 2024)
• Birthplace: Pretoria, Transvaal, South Africa
• Current Roles: CEO of SpaceX, CEO of Tesla, Owner/CTO of X (formerly Twitter), Founder of The Boring Company and Neuralink
• Mothers of His Children: Justine Musk (5 children), Grimes (3 children), Shivon Zilis (4 children), and Ashley St. Clair (1 child)
• Total Confirmed Children: 14 (1 deceased)

The Full Chronological List of Elon Musk's 14 Children

The names of Elon Musk's children are a journey through time, from classical names to terms plucked directly from supercomputing and space. The following list details all 14 children in order of birth, including their mothers and birth years, reflecting the most current information available as of late 2024.

Children with Justine Musk (5 Surviving, 1 Deceased)

Elon Musk married Canadian author Justine Wilson in 2000. They used IVF for their children after the tragic loss of their first son.

• Nevada Alexander Musk
  • Born: 2002
  • Status: Tragically died of Sudden Infant Death Syndrome (SIDS) at 10 weeks old.
• Griffin Musk (Twin)
  • Born: April 2004
  • Mother: Justine Musk
• Vivian Jenna Wilson (Twin)
  • Born: April 2004
  • Mother: Justine Musk
  • Note: Vivian was born Xavier Musk and legally changed her name and gender in 2022. She chose the surname Wilson, her mother's maiden name.
• Kai Musk (Triplet)
  • Born: January 2006
  • Mother: Justine Musk
• Saxon Musk (Triplet)
  • Born: January 2006
  • Mother: Justine Musk
• Damian Musk (Triplet)
  • Born: January 2006
  • Mother: Justine Musk

Children with Grimes (3 Total)

Musk’s relationship with musician Claire Boucher, known as Grimes, produced some of the most talked-about and unique baby names in modern celebrity history.

• X Æ A-Xii Musk (Nickname: 'X')
  • Born: May 2020
  • Mother: Grimes
• Exa Dark Sideræl Musk (Nickname: 'Y' or 'Syd')
  • Born: December 2021 (via surrogate)
  • Mother: Grimes
• Techno Mechanicus Musk (Nickname: 'Tau')
  • Born: June 2022
  • Mother: Grimes
  • Note: The existence and name of this third child were revealed in a 2023 biography of Elon Musk.

Children with Shivon Zilis (4 Total)

Shivon Zilis is a top executive at Neuralink, one of Musk’s companies. The existence of their first two children was revealed in 2022 court filings.

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• Strider Musk (Twin)
  • Born: November 2021
  • Mother: Shivon Zilis
• Azure Musk (Twin)
  • Born: November 2021
  • Mother: Shivon Zilis
• Arcadia Musk
  • Born: February 28, 2024
  • Mother: Shivon Zilis
• Seldon Lycurgus Musk
  • Born: Sometime in 2024
  • Mother: Shivon Zilis
  • Note: Seldon is reportedly Musk’s 14th child and the fourth with Zilis, making him one of the most recent additions.

Child with Ashley St. Clair (1 Total)

Conservative commentator Ashley St. Clair announced the birth of her son in 2024, and reports later confirmed Musk as the father following a paternity test.

• Romulus Musk
  • Born: Fall 2024
  • Mother: Ashley St. Clair

Decoding the Unbelievable and Futuristic Names

While the children with Justine Musk have relatively traditional names (Griffin, Vivian, Kai, Saxon, Damian), the children he shares with Grimes and Shivon Zilis have names that sound like they were pulled from a science fiction novel, which is entirely intentional given Musk's love for futurism and space exploration.

X Æ A-Xii Musk: The Code Name

The name of Musk and Grimes' first child is perhaps the most famous and confusing celebrity baby name ever. The official pronunciation, according to Musk, is "Ex-Ash-Twelve."

• X: Represents "the unknown variable."
• Æ: The Elven spelling of "AI," which stands for both Artificial Intelligence and "love."
• A-Xii: A tribute to the Lockheed A-12 "Archangel," the precursor to the SR-71 Blackbird, which the couple considers "their favorite aircraft."

The name was initially registered as X Æ A-12 but had to be changed to X Æ A-Xii to comply with California state law, which only allows letters from the English alphabet in a name, though the hyphen is an exception. The child is commonly referred to by his nickname, 'X'.

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Exa Dark Sideræl Musk: The Supercomputing Term

Musk and Grimes' daughter, nicknamed 'Y' or 'Syd', has a name with an equally deep, technical meaning, reflecting a love for the esoteric and the cosmos.

• Exa: Refers to exaFLOPS, a term used in supercomputing to denote a massive unit of calculation (1 quintillion floating-point operations per second).
• Dark: Represents "the unknown" and is a nod to dark matter, the mysterious, non-luminous substance that makes up most of the universe.
• Sideræl: Pronounced "sigh-deer-ee-el," this word means "with respect to the distant stars."

Techno Mechanicus Musk: The Mathematical Constant

The third child with Grimes, nicknamed 'Tau', also follows the pattern of obscure, high-concept naming.

• Tau: The nickname is a reference to the mathematical constant $\tau$ (tau), which is equal to $2\pi$ (two times pi), a number often preferred by mathematicians for its elegance in circle calculations.
• Techno: Likely references the music genre, given Grimes' background.
• Mechanicus: A term that evokes engineering, machines, and the concept of a mechanism, fitting the family's technological interests.

The Growing Family: Recent Additions in 2024

The year 2024 saw the birth of at least three new children, cementing Musk’s status as a father of a large, modern family. The names chosen for the children with Shivon Zilis—Strider, Azure, Arcadia, and Seldon Lycurgus—lean toward classical and mythical figures, a slight departure from the Grimes-era names but still unconventional.

The Zilis Children: Mythology and Classicism

The names of the four children Musk shares with Shivon Zilis have a more grounded, though still grand, feel.

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• Strider and Azure: These names are unique but less cryptic than the Grimes children’s names. "Azure" is a deep blue color, often associated with the sky, while "Strider" is a name with literary and adventurous connotations.
• Arcadia: Born in February 2024, Arcadia is a place name with deep roots in Greek mythology, representing an idyllic, harmonious, and natural paradise.
• Seldon Lycurgus: This name, confirmed as one of the latest additions in 2024, has a strong historical and science fiction resonance. "Seldon" is a key name in Isaac Asimov's *Foundation* series (Hari Seldon), a work known to be a major influence on Musk. "Lycurgus" is the legendary lawgiver of Sparta, a classical figure known for establishing a strict, disciplined society.

The St. Clair Child: Romulus

The birth of Romulus in Fall 2024, whose paternity was confirmed via a report, adds another layer to the family dynamic. The name Romulus is famously historical, belonging to the mythical founder and first king of Rome, who, along with his twin brother Remus, was raised by a she-wolf. This choice continues the theme of powerful, foundational figures in the naming of Musk’s children.

The expanding family of Elon Musk, now totaling 14 children, is a testament to his stated belief in addressing declining birth rates. Whether the names are based on ancient mythology, supercomputing terms, or Elven script, they are all a reflection of the unique, complex, and future-focused life of one of the world's most influential figures.