The 10 Extraordinary Names Of Elon Musk's Sons: Meanings, Mothers, And The Latest 2025 Updates
Elon Musk’s growing family continues to capture global attention, not just for its size, but for the truly extraordinary and often cryptic names he chooses for his children. As of the current date in late 2025, the billionaire CEO of Tesla and SpaceX is a father to 14 children with four different women, and his sons' names represent a fascinating blend of classical mythology, science fiction, and high-tech code. This article provides the most current and in-depth look at every one of Elon Musk's sons, detailing their unique names, their mothers, and the hidden meanings behind the monikers.
The latest updates in 2025 confirmed two new additions to the family, including a son whose name draws on Roman legend, solidifying Musk’s pattern of giving his children names that echo themes of civilization, technology, and the future of humanity. Understanding these names is like decoding a secret manifesto of the tech world's most influential figure.
The Complete Biography of Elon Musk's Sons
Elon Musk's journey into fatherhood spans over two decades and four relationships. Here is a definitive, chronological list of his sons, including their mothers and birth details. This list is current as of late 2025, incorporating the most recently reported additions to his family.
- Nevada Alexander Musk
- Mother: Justine Wilson
- Born: 2002
- Status: Tragically passed away from SIDS at 10 weeks old.
- Griffin Musk
- Mother: Justine Wilson
- Born: 2004 (Twin)
- Note: Born via IVF, twin to Vivian Jenna Wilson.
- Kai Musk
- Mother: Justine Wilson
- Born: 2006 (Triplet)
- Note: Born via IVF, triplet to Saxon and Damian.
- Saxon Musk
- Mother: Justine Wilson
- Born: 2006 (Triplet)
- Note: Born via IVF, triplet to Kai and Damian.
- Damian Musk
- Mother: Justine Wilson
- Born: 2006 (Triplet)
- Note: Born via IVF, triplet to Kai and Saxon.
- X Æ A-Xii Musk ('X')
- Mother: Grimes (Claire Boucher)
- Born: May 4, 2020
- Note: Originally named X Æ A-12, later legally changed to X Æ A-Xii.
- Strider Zilis Musk
- Mother: Shivon Zilis
- Born: November 2021 (Twin)
- Note: Twin to Azure Zilis Musk.
- Techno Mechanicus Musk ('Tau')
- Mother: Grimes (Claire Boucher)
- Born: June 2022
- Note: His name and existence were revealed in Walter Isaacson's biography.
- Romulus Musk
- Mother: Ashley St. Clair
- Born: Fall 2024 (Confirmed April 2025)
- Note: The 13th child, confirmed via paternity test and media reports in 2025.
- Seldon Lycurgus Musk
- Mother: Shivon Zilis
- Born: Early 2025 (Confirmed March 2025)
- Note: The 14th child, a son with Neuralink executive Shivon Zilis.
Decoding the Futuristic and Classical Monikers
The names of Elon Musk's sons are far from conventional, often combining linguistic elements from technology, mathematics, and ancient history. These unique choices offer deep insight into the cultural and intellectual interests of the tech mogul, from science fiction literature to Roman and Greek mythology.
X Æ A-Xii: The AI-Powered Enigma
Perhaps the most famous—and confusing—of all his children’s names is X Æ A-Xii, often simply referred to as 'X'. The name is a direct collaboration between Musk and his former partner, the musician Grimes. The meaning is a composite of high-concept entities.
- X: Represents the "unknown variable," a nod to mathematics and the mysteries of the universe.
- Æ: According to Grimes, this is the "Elven spelling" of AI, which stands for both Artificial Intelligence and the word "love" in some languages.
- A-Xii (originally A-12): This component is a tribute to the Lockheed SR-71 Blackbird's predecessor, the Archangel A-12, which Musk referred to as the "coolest plane ever." The 'Xii' is the Roman numeral equivalent, a necessary legal change in California, which restricts special characters in birth names.
The pronunciation, according to the parents, is roughly "Ex Ash A Twelve" or "Ex Ai Archangel," depending on who you ask, making it a true linguistic puzzle.
Techno Mechanicus ('Tau'): The Machine Age Manifesto
The existence of Musk and Grimes' third child, a son named Techno Mechanicus, was one of the biggest family revelations of 2022. Nicknamed 'Tau,' a letter in the Greek alphabet, his full name is a direct statement about the intersection of technology and humanity.
The name Techno Mechanicus suggests a reverence for the machine age and complex engineering. The term "Mechanicus" is particularly evocative, often associated with the fictional Adeptus Mechanicus from the Warhammer 40,000 universe, a faction of scientists and engineers who worship the Machine God. This choice firmly places the child's identity within the lore of science fiction and advanced technology, aligning perfectly with Musk's professional endeavors at SpaceX and Tesla.
The Newest Sons: From Romulus to Lycurgus (2025 Updates)
The year 2025 brought two major, confirmed updates to the list of Elon Musk's sons, both with names rooted in ancient history and intellectual prowess. These recent additions underscore a shift from pure sci-fi code to classical, civilization-building figures.
Romulus: The Founder of a New Era
The son born to influencer Ashley St. Clair, whose name was confirmed in April 2025, is Romulus. The name is instantly recognizable as one half of the legendary founding twins of Rome, Romulus and Remus.
The choice of Romulus is a powerful entity reference, symbolizing a foundational leader and the creation of a new, enduring civilization. Given Musk's ambitions to colonize Mars, the name can be seen as a metaphorical nod to establishing a new human civilization—the 'New Rome'—among the stars.
Seldon Lycurgus: A Tribute to Science and Law
Born in early 2025 to Neuralink executive Shivon Zilis, Seldon Lycurgus is perhaps the most intellectually dense of the classical names.
- Seldon: This name is a clear homage to Hari Seldon, the visionary mathematician and founder of Psychohistory in Isaac Asimov's seminal *Foundation* science fiction series. Hari Seldon's goal was to minimize a galactic dark age by mathematically predicting and guiding the future of humanity, a concept deeply resonant with Musk's long-term, civilization-scale thinking.
- Lycurgus: The middle name is inspired by the legendary lawgiver of Sparta, who is credited with establishing the Spartan social and military reforms. This addition balances the theoretical (Seldon) with the practical (Lycurgus), suggesting a desire for a child who is both a visionary and a builder of societal structure.
The Sons of the First Marriage: Griffin, Kai, Saxon, and Damian
Musk’s first five children were with his first wife, Canadian author Justine Wilson. While their names are more conventional, they form the foundation of his large family. After the tragic loss of their first son, Nevada Alexander, the couple used IVF to welcome twins and then triplets.
The twins, Griffin Musk and Vivian Jenna Wilson (daughter), and the triplets, Kai, Saxon, and Damian Musk, all carry strong, traditional names. These names, derived from Welsh, Nordic, and Greek origins, stand in stark contrast to the futuristic choices for his later children, marking a distinct evolution in Musk's naming philosophy over time. The triplets' names—Kai, Saxon, and Damian—are all short, powerful, and historically significant, reflecting a simpler, more classical approach before the advent of the 'X' era.
Finally, the name Strider Zilis Musk, twin to Azure Zilis Musk, continues the trend of strong, evocative names. While not as complex as his half-brothers' names, 'Strider' suggests a traveler or a wanderer, perhaps an allusion to the journey of a new generation across a technological or even an interstellar landscape.
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