The Musk Dynasty: A Complete, Up-to-Date List Of Elon Musk's 14 Children And The Shocking Meaning Behind Their Names

Billionaire entrepreneur Elon Musk, the CEO of Tesla and SpaceX, is as famous for his ambitious ventures into space and electric vehicles as he is for his large, unconventional family. As of late , the tech mogul is the father of 14 children, a number that has grown rapidly and often secretly over the last few years, making his family one of the most talked-about celebrity families in the world. This extensive family tree spans four different mothers and includes some of the most unique and futuristic names ever given to children, reflecting Musk's fascination with science, technology, and mythology.

The constant, surprising updates to the Musk family dynamic—including unexpected births and high-profile name changes—mean that keeping track of all his 'Musk-eteers' requires constant vigilance. This article provides a definitive, chronological, and up-to-date look at every one of Elon Musk's children, their mothers, and the often-shocking inspiration behind their extraordinary names, including the newest additions, Romulus and Tau Techno Mechanicus.

The Musk Family Roster: A Complete Biography of All 14 Children and Their Mothers

Elon Musk has welcomed 14 children with four different partners over two decades, though one child tragically passed away in infancy. The list below is a chronological breakdown of his children, detailing their names, birth years, and the mother they share with the tech titan.

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• Mother: Justine Wilson (Canadian Author)
• Nevada Alexander Musk: (Born 2002, Deceased 2002). Nevada tragically died of Sudden Infant Death Syndrome (SIDS) at just 10 weeks old.
• Griffin Musk: (Born 2004). Twin son, conceived via IVF.
• Vivian Jenna Wilson (formerly Xavier Alexander Musk): (Born 2004). Twin daughter, Griffin's sibling, who legally changed her name and gender in 2022 to take her mother's maiden name.
• Kai Musk: (Born 2006). Triplet son, conceived via IVF.
• Saxon Musk: (Born 2006). Triplet son.
• Damian Musk: (Born 2006). Triplet son.
• Mother: Grimes (Claire Boucher, Musician)
• X Æ A-XII Musk (Nickname: X): (Born 2020). Son, famous for his unconventional name.
• Exa Dark Sideræl Musk (Nickname: Y): (Born 2021). Daughter, born via surrogate.
• Tau Techno Mechanicus (Nickname: T): (Born Unknown, Revealed 2023). Son, the third child with Grimes, kept private for many months.
• Mother: Shivon Zilis (Neuralink Executive)
• Strider Sekhar Sirius: (Born 2021). Twin son, born weeks before Exa Dark Sideræl.
• Azure Astra Alice: (Born 2021). Twin daughter, Strider's sibling.
• Mother: Ashley St. Clair (Conservative Influencer)
• Romulus: (Born Fall 2024, Revealed 2025). Son, the most recently reported child, confirmed via a court-ordered paternity test.

Note on the Count: While the names above total 12 children (11 living), multiple recent reports consistently claim 14 children with four mothers, suggesting two other births have not been publicly confirmed or named, or that the count includes a rumored child named Arcadia.

Decoding the Futuristic and Mythological Names

The names of Elon Musk's children with Justine Wilson are relatively traditional (Griffin, Kai, Saxon, Damian), but his children with Grimes and the more recent additions have names that delve deep into science fiction, technology, and ancient mythology. These choices have cemented the Musk family’s reputation for being truly unconventional.

The Grimes Trio: X, Y, and T

The names of the children Musk shares with the musician Grimes (Claire Boucher) are arguably the most perplexing and famous. They are a clear nod to the couple's shared interest in futurism, space, and artificial intelligence.

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X Æ A-XII (X)

The first child's name, X Æ A-XII, created a global sensation upon his birth in 2020. Grimes herself broke down the complex meaning:

• X: The "unknown variable."
• Æ: The elven spelling of "AI" (Artificial Intelligence) or "Love."
• A-XII: A reference to the Lockheed SR-71 Blackbird's precursor, the A-12 Archangel, which is Grimes' favorite aircraft—"no weapons, no defenses, just speed."

The name was later legally modified to X Æ A-Xii due to California state laws that prohibit the use of numbers in a legal name.

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Exa Dark Sideræl (Y)

Exa Dark Sideræl, who goes by the nickname Y, was born in late 2021. Her name is equally complex and technologically inspired:

• Exa: A reference to exaFLOPS, a term in supercomputing that means the ability to perform one quintillion floating-point operations per second.
• Dark: Represents the unknown, specifically dark matter, which is the invisible, true nature of the universe.
• Sideræl: Pronounced "sigh-deer-ee-elle," it is a more "elven" spelling of "sidereal," meaning relating to or determined by the stars.

Tau Techno Mechanicus (T)

The third child, whose existence was revealed in 2023, is named Techno Mechanicus, with the nickname Tau. The name continues the theme of advanced technology and science, with "Techno Mechanicus" speaking for itself as a futuristic, machine-age moniker. The nickname "Tau" is the 19th letter of the Greek alphabet, often used in mathematics and physics to represent time, torque, or a specific constant (2π).

The Twins and the Latest Additions: Mythology and the Cosmos

The children Musk shares with Neuralink executive Shivon Zilis and conservative influencer Ashley St. Clair introduce a blend of mythological and cosmic themes, adding further topical authority to the Musk family tree.

The Zilis Twins: Strider and Azure

Born in November 2021, the twins Strider Sekhar Sirius and Azure Astra Alice have names that draw on literature and the cosmos.

• Strider: This name is widely believed to be a reference to Aragorn's alias, "Strider," from J.R.R. Tolkien's *The Lord of the Rings*.
• Sirius: The brightest star in the night sky, often called the "Dog Star."
• Azure Astra Alice: 'Azure' is a shade of blue, often referring to the sky or the heavens. 'Astra' is Latin for "star," directly connecting her name to the cosmos.

The Newest Chapter: Romulus

The most recent publicly known addition, Romulus, was born in the fall of 2024 to Ashley St. Clair. This name is a direct and powerful nod to classical mythology. Romulus is the legendary founder of Rome, who, along with his twin brother Remus, was raised by a she-wolf. The choice of this name, with its strong historical and founding-figure connotations, is highly symbolic for a man who often speaks of building new civilizations on Earth and Mars.

The Name Change That Made Headlines: Vivian Jenna Wilson

One of the most significant and personal updates to the Musk family dynamic came from his eldest living child, Vivian. Born as Xavier Alexander Musk, she filed a petition to legally change her name to Vivian Jenna Wilson and her gender identity in 2022.

The change to Wilson—her mother Justine Wilson’s maiden name—was reportedly made to sever ties with her famous father. Court documents cited that she "no longer wishes to be related to my biological father in any way, shape or form." This highly publicized event brought the complexities of the Musk family’s private life into the public spotlight, highlighting the personal distance between the billionaire and some of his children.

Elon Musk's Parenting Philosophy and Legacy

Elon Musk's large family and the unique names of his children are intrinsically linked to his public persona. He has often spoken about his concerns regarding declining birth rates and his desire to have a significant positive impact on the world, which he sees partly through his children.

From traditional, mythological names like Romulus to the hyper-futuristic X Æ A-XII and Techno Mechanicus, the names of Elon Musk's children serve as a fascinating mirror to his own ambitions and worldview. They are a blend of science, space, and a clear rejection of convention, ensuring that the legacy of the Musk dynasty will be as unique as the names themselves.

As the Musk family tree continues to grow and evolve, each new birth and name reveal provides a fresh chapter in the life of one of the world's most influential and idiosyncratic figures. The names are more than just labels; they are conversation starters, cultural phenomena, and a clear sign that in the Musk world, the future is now.