The Definitive List Of Elon Musk’s Sons’ Names: From Nevada To Romulus, And The Meaning Behind X Æ A-Xii
The family of tech mogul Elon Musk has grown significantly in recent years, making the full, current list of his children's names a topic of intense public curiosity. As of December 2025, the Tesla and SpaceX CEO is the father of at least 14 children with four different women, and the names of his sons, in particular, range from the traditional to the truly futuristic and mythological, reflecting the unique personalities of their parents. The most recent additions, announced in early 2025, have added two more unique names to the roster, solidifying Musk's status as one of the world's most prolific fathers.
This article provides a comprehensive, up-to-date breakdown of every son's name, their mother, and the fascinating, often complex, biographical details surrounding their birth. The recent revelations about his youngest sons, Romulus and Seldon Lycurgus, demonstrate that the tradition of distinctive naming within the Musk family continues to evolve.
The Complete Biography of Elon Musk’s Sons (2025 Update)
Elon Musk has fathered a total of at least 14 children with four different women, with his sons accounting for the majority of his offspring. The following is a chronological list of his sons, including the most recent additions announced in early 2025.
- Name: Nevada Alexander Musk
- Mother: Justine Wilson (Canadian Author)
- Birth/Death: 2002. Tragically passed away from SIDS at 10 weeks old.
- Name: Griffin Musk
- Mother: Justine Wilson
- Birth Date: 2004 (Twin)
- Name: Kai Musk
- Mother: Justine Wilson
- Birth Date: 2006 (Triplet)
- Name: Saxon Musk
- Mother: Justine Wilson
- Birth Date: 2006 (Triplet)
- Name: Damian Musk
- Mother: Justine Wilson
- Birth Date: 2006 (Triplet)
- Name: X Æ A-Xii Musk (Originally X Æ A-12, Nickname: "X")
- Mother: Grimes (Claire Boucher - Musician)
- Birth Date: May 4, 2020
- Name: Strider Musk
- Mother: Shivon Zilis (Neuralink Executive)
- Birth Date: November 2021 (Twin)
- Name: Seldon Lycurgus Musk
- Mother: Shivon Zilis
- Birth Date: Announced February 2025 (Fourth child with Zilis)
- Name: Romulus Musk
- Mother: Ashley St. Clair (Author/Influencer)
- Birth Date: Born September 2024, announced February 2025
The Nine Sons of Elon Musk: A Deep Dive into Their Names
Elon Musk’s sons can be broadly categorized into three distinct naming traditions: the classic, the mythological, and the avant-garde. The sheer volume of his children, and the unique names he has chosen, reflect a clear departure from typical celebrity naming conventions, often incorporating elements of science, history, and literature.
The Classic and Traditional Names: Nevada, Griffin, Kai, Saxon, and Damian
Musk’s first six children, all born to his first wife, Justine Wilson, follow a more conventional, albeit still strong, naming pattern. The first son, Nevada Alexander Musk, was a traditional name that tragically ended in 2002.
The subsequent twins and triplets—Griffin, Kai, Saxon, and Damian—have names rooted in history and literature:
- Griffin: A name of Welsh origin, referencing the mythical creature with the body of a lion and the head and wings of an eagle, often symbolizing strength and courage.
- Kai: A name with diverse origins, meaning "sea" in Hawaiian, "earth" in Māori, and often associated with a strong, natural element.
- Saxon: Directly referencing the Germanic tribe that settled in Great Britain, giving the name a historical, Old English gravitas.
- Damian: A name of Greek origin, derived from the word meaning "to tame" or "subdue," and is a well-established, classic name.
These five names stand in stark contrast to the names of his later children, creating a fascinating timeline of his evolving naming philosophy.
The Mythological and Historical Names: Strider, Seldon Lycurgus, and Romulus
The names of Musk’s newest sons demonstrate a clear affinity for mythology, classical history, and science fiction. This trend is particularly evident in the children he shares with Shivon Zilis and Ashley St. Clair.
- Strider Musk: Strider is the twin son he shares with Shivon Zilis. The name is most famously recognized as the alias of Aragorn in J.R.R. Tolkien’s The Lord of the Rings, a character known for his hidden nobility and ability to roam.
- Seldon Lycurgus Musk: Announced in February 2025 as the fourth child with Shivon Zilis, this name is a powerful fusion of science fiction and ancient history. "Seldon" is a direct reference to Hari Seldon, the founder of Psychohistory in Isaac Asimov's seminal Foundation series, a figure who predicts the future of humanity. "Lycurgus" is the legendary lawgiver of Sparta, known for his radical reforms. This name is a clear nod to both Musk's love for sci-fi and his interest in societal restructuring.
- Romulus Musk: Born in September 2024 to Ashley St. Clair, Romulus is one of the newest additions to the Musk family. In Roman mythology, Romulus and his twin brother Remus are the legendary founders of Rome. This name continues the mythological and foundational theme seen in his other children's names, symbolizing new beginnings and civilization.
Decoding X Æ A-Xii: The Most Controversial Son’s Name
The name of the son Elon Musk shares with musician Grimes, X Æ A-Xii, remains the most notorious and frequently searched name in the family. The name was originally X Æ A-12, but was legally changed to X Æ A-Xii to comply with California law, which restricts the use of numerals in names.
Grimes herself has provided a detailed breakdown of the name's esoteric meaning, which is a blend of mathematics, elven language, and aerospace history:
- X: Represents the "unknowable variable," a common element in algebra and mathematics.
- Æ: Is Grimes' "elven spelling" of A.I., standing for "Artificial Intelligence" and/or "love."
- A-Xii: Refers to the "Archangel," the internal code name for the Lockheed SR-71 Blackbird's precursor, the A-12 reconnaissance aircraft. It is described as the couple’s favorite aircraft, known for its speed and lack of weaponry.
Musk commonly refers to his son by the simple nickname "X" or "Lil X." The pronunciation, according to Musk and Grimes, is generally "X-Ash-A-Twelve" or "Ex-Ay-Eii," though the initial "X" is pronounced like the letter itself.
Topical Authority: The Expanding Musk Family Tree and LSI Keywords
The recent announcements of Seldon Lycurgus and Romulus have brought the total count of Elon Musk's children to 14, a massive family unit that continues to generate global headlines. This expansion highlights the billionaire's vocal belief in the importance of high birth rates for the future of civilization, a personal philosophy that is now intrinsically linked to his public image. The mothers of his children—Justine Wilson, Grimes, Shivon Zilis, and Ashley St. Clair—each represent a different chapter in his life, from his college years to his current executive ventures.
The inclusion of names like "Techno Mechanicus" (Tau), the name of his third child with Grimes, and "Exa Dark Sideræl" (Y), the name of his daughter with Grimes, further cements the family's unique naming legacy. The consistent use of highly complex, high-concept names, particularly for his sons, ensures that the topic of "Elon Musk's children's names" remains a perennial subject of interest, driven by curiosity and the sheer novelty of the monikers.
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