The Complete List Of Elon Musk's 14 Children: All Sons' Names, Their Mothers, And The Meaning Behind X Æ A-Xii

The name "Elon Musk's son" no longer refers to a single child but a growing list of unique, often futuristic monikers that have captured global attention. As of late 2024, the tech mogul is a father to 14 children, a number that has dramatically increased in recent years with the revelation of new births and a dramatic paternity confirmation. This article, updated in December 2025, provides the definitive, current list of all 14 children, focusing on the names of his sons and the four mothers who share them.

The names range from the traditional to the truly bizarre, reflecting Musk’s fascination with science, technology, and classical history. The latest confirmed additions, including a son named Romulus, solidify his reputation for having one of the most talked-about and complex family trees in the world. We break down every son's name, the mother, and the context of their birth.

Elon Musk: A Biographical Profile of the Father of 14

Elon Reeve Musk is a business magnate and investor known for co-founding PayPal and heading companies like Tesla, SpaceX, Neuralink, and X (formerly Twitter). His personal life, particularly his expanding family, has become as scrutinized as his professional ventures. He has had children with four different women, establishing a complex and highly public family dynamic.

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• Full Name: Elon Reeve Musk
• Date of Birth: June 28, 1971
• Place of Birth: Pretoria, Transvaal, South Africa
• Nationality: South African, Canadian, American
• Parents: Errol Musk (Father), Maye Musk (Mother)
• Siblings: Kimbal Musk, Tosca Musk
• Education: University of Pennsylvania (B.A. in Physics, B.S. in Economics)
• Spouses: Justine Wilson (m. 2000; div. 2008), Talulah Riley (m. 2010; div. 2012; m. 2013; div. 2016)
• Partners with Children: Justine Wilson, Grimes (Claire Boucher), Shivon Zilis, Ashley St. Clair
• Known Children: 14 (Sons: Nevada, Griffin, Kai, Saxon, Damian, X Æ A-Xii, Strider, Seldon Lycurgus, Techno Mechanicus, Romulus. Daughters: Vivian, Exa Dark Sideræl, Azure, Arcadia)

The Definitive List of All 10 of Elon Musk's Sons and Their Mothers

Elon Musk has been vocal about his belief in the importance of population growth, and his own family life reflects this commitment. Out of his 14 children, 10 are sons, each with a name that tells a unique story—from the classic to the cryptographic. The most recent confirmations have brought the total number of mothers of his children to four.

Sons with Justine Wilson (6 Children Total)

Musk’s first wife, Canadian author Justine Wilson, is the mother of his first six children. The couple utilized in vitro fertilization (IVF) to conceive their children after the tragic loss of their first son.

1. Nevada Alexander Musk (Son): Born in 2002. Nevada tragically died of Sudden Infant Death Syndrome (SIDS) at just 10 weeks old.
2. Griffin Musk (Son): Born in 2004 (Twin). Griffin is the older of the first set of twins.
3. Kai Musk (Son): Born in 2006 (Triplet). Kai is one of the triplet sons born two years after the twins.
4. Saxon Musk (Son): Born in 2006 (Triplet).
5. Damian Musk (Son): Born in 2006 (Triplet).

Note: The sixth child with Justine Wilson is a daughter, Vivian Jenna Wilson (born 2004, twin of Griffin), who legally changed her name and severed ties with her father.

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Sons with Grimes (3 Children Total)

The Canadian musician Grimes (Claire Boucher) is known for her unconventional artistic style, which is clearly reflected in the names of the three children she shares with Musk. These names are arguably the most famous and complex of the entire Musk family.

7. X Æ A-Xii Musk (Son): Born May 4, 2020. Originally named X Æ A-12, the name was later slightly altered to comply with California law, which prohibits numbers in a legal name. The name is often pronounced "X Ash A Twelve" or "X AI Archangel."
8. Techno Mechanicus Musk (Son): Born sometime in 2023. Nicknamed "Tau," this name maintains the unique, futuristic, and technological theme established by his older brother. The name was first revealed in a biography of Elon Musk.

Note: Their second child is a daughter, Exa Dark Sideræl Musk (born December 2021 via surrogate), who is nicknamed "Y."

Sons with Shivon Zilis (4 Children Total)

Shivon Zilis, a top executive at Musk's Neuralink company, is the mother of four of his children. The births of the first set of twins were kept private until court documents were revealed. The most recent additions, a second set of twins, were confirmed in 2024.

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9. Strider Musk (Son): Born November 2021 (Twin). Strider and his sister were born just weeks before the birth of Exa Dark Sideræl, Musk’s daughter with Grimes.
10. Seldon Lycurgus Musk (Son): Born in 2024 (Twin). Seldon and his sister Arcadia are the most recent confirmed additions to the family, revealed in 2024. The name Lycurgus is a nod to the legendary Spartan lawgiver.

Note: The other two children with Shivon Zilis are daughters: Azure Musk (born November 2021, twin of Strider) and Arcadia Musk (born 2024, twin of Seldon Lycurgus).

The Latest Confirmed Son: Romulus

In a dramatic development that made headlines in late 2024, a paternity dispute confirmed that Musk is the father of a son with conservative influencer Ashley St. Clair. This confirmation brought the total number of his children to 14 and the number of mothers to four.

11. Romulus St. Clair (Son): Born in 2024. The name Romulus is a direct reference to the legendary founder of Rome, who was raised by a she-wolf. The paternity was confirmed by a Labcorp report, ending months of public speculation.

The Meaning Behind Elon Musk's Most Unusual Children's Names

Musk’s naming conventions are a blend of high-tech references, classical mythology, and esoteric symbols. These unique choices are a massive source of public fascination and contribute significantly to the family's topical authority.

X Æ A-Xii: Deciphering the Code

The name of Musk's eldest son with Grimes is a linguistic puzzle. Both parents have offered slightly different explanations for its meaning, but the general breakdown is as follows:

• X: Represents the unknown variable.
• Æ: The elven spelling of "Ai" (love and/or Artificial Intelligence).
• A-Xii: A reference to the Lockheed SR-71 Blackbird's precursor, the "Archangel-12," which the couple considers "their favorite aircraft." The Roman numerals 'Xii' were used to make the name legally viable.

Exa Dark Sideræl and Techno Mechanicus

The names of the other two children with Grimes are equally steeped in technology and science fiction:

• Exa Dark Sideræl (Daughter): 'Exa' refers to exaFLOP, a computing term for a quadrillion floating-point operations per second. 'Dark' is a nod to "the unknown," and 'Sideræl' is an elven spelling of "sidereal," meaning relating to the stars.
• Techno Mechanicus (Son): Nicknamed 'Tau,' a Greek letter often used in physics and mathematics. 'Techno Mechanicus' speaks to a love of machines and technology, fitting the family's high-tech legacy.

The Classical Nods: Romulus and Seldon Lycurgus

Musk’s more recent sons have been given names with deep roots in history and literature, contrasting sharply with the futuristic names of his children with Grimes.

• Romulus: In Roman mythology, Romulus and his twin brother Remus are the legendary founders of Rome. The name suggests a grand, foundational, and perhaps ambitious destiny.
• Seldon Lycurgus: 'Seldon' is likely a reference to Hari Seldon, a fictional character in Isaac Asimov's *Foundation* series, a work Musk greatly admires. 'Lycurgus' is the name of the legendary lawgiver of Sparta, tying into themes of order and governance.

The Growing Musk Family Tree: A Modern Dynasty

The sheer size and complexity of Elon Musk's family tree have made it a topic of intense discussion, often viewed through the lens of his public advocacy for increasing the birth rate. His large family is frequently cited in discussions about his legacy, his views on humanity's future, and his personal life philosophy. The use of unique and memorable names ensures that each child, particularly his sons, remains a distinct entity in the public eye, contributing to the narrative of a modern, multi-family dynasty built on innovation and ambition.

From the tragic loss of his first son, Nevada Alexander, to the futuristic naming of X Æ A-Xii, and the latest confirmation of Romulus, the list of Elon Musk's sons is a fascinating chronicle of one of the world's most influential figures. The names themselves are a unique blend of science, history, and the esoteric, cementing the Musk children's place as a truly unique family in the public sphere.