The Definitive List Of Elon Musk's Sons' Names: Meanings, Pronunciations, And The Latest 2025 Updates
Elon Musk’s family life is arguably as complex and headline-grabbing as his business ventures at Tesla and SpaceX. With a growing number of children from four different partners, the question of "What is Elon Musk's sons' names?" has become a viral search query, especially given the famously unique and often cryptic monikers he and the mothers of his children have chosen. As of the current date in late 2025, the total number of children attributed to the tech mogul has reportedly reached 14, with several recent additions adding new layers to the family tree.
This article provides the most current and definitive list of Elon Musk’s sons, detailing their distinctive names, the mothers they share, and the intriguing meanings behind each choice. We will break down the full roster of the "Musk-eteers," focusing on the boys who carry the legacy of one of the world's most influential figures. The most recent reports from early 2025 confirm the birth of at least two new children, further cementing the complexity of the Musk dynasty.
The Full Roster: Elon Musk's Sons and Their Mothers
Elon Musk has fathered children with four women: his first wife, Canadian author Justine Wilson; musician Grimes (Claire Boucher); Neuralink executive Shivon Zilis; and conservative journalist Ashley St. Clair. The names of his sons are a fascinating mix of classical, philosophical, and futuristic references, reflecting the interests of their visionary father.
- Nevada Alexander Musk (Mother: Justine Wilson)
- Griffin Musk (Mother: Justine Wilson)
- X Æ A-Xii (Originally X Æ A-12) (Mother: Grimes)
- Techno Mechanicus (Nickname: "Tau") (Mother: Grimes)
- Strider Zilis Musk (Mother: Shivon Zilis)
- Romulus (Mother: Ashley St. Clair)
- Seldon Lycurgus (Mother: Shivon Zilis)
Born in 2002, Nevada was the first son of Elon Musk and Justine Wilson. Tragically, he passed away from Sudden Infant Death Syndrome (SIDS) at just 10 weeks old.
Born in 2004, Griffin is one of the twins welcomed via IVF by Musk and Wilson. He is one of the more conventionally named children in the family. His twin sibling, formerly named Xavier, legally changed her name to Vivian Jenna Wilson in 2022.
Born in May 2020, this son is perhaps the most famous and debated of all the Musk children's names. The name was later legally changed from the numerical "12" to the Roman numeral "Xii" to comply with California law, which prohibits numbers in names.
The third child shared by Musk and Grimes, Techno Mechanicus, who goes by the nickname "Tau," was revealed in Walter Isaacson’s 2023 biography of Elon Musk. This name continues the trend of highly conceptual and scientific monikers.
Strider is one of the twins born to Musk and Shivon Zilis in November 2021. The twins were born just weeks before the birth of Musk's second child with Grimes. Strider and his sister, Azure, both use their mother's surname as a middle name.
Reported in February 2025, conservative journalist Ashley St. Clair announced the birth of her son, Romulus, in September 2024, with Musk reportedly being the father. This name is a classical reference to one of the legendary founders of Rome.
Announced by Shivon Zilis in February 2025, Seldon Lycurgus is the latest reported son. The name "Seldon" is believed to be a reference to Hari Seldon, a pivotal character in Isaac Asimov's seminal science fiction Foundation series, a known inspiration for Musk. "Lycurgus" is a name with deep roots in ancient Greek law and history.
Decoding the Unconventional: Meanings and Pronunciations
The names chosen for the children of Elon Musk and Grimes are particularly complex, designed to be more conceptual than linguistic. Understanding them requires a look into mathematics, aviation, and philosophical concepts.
X Æ A-Xii: The Name That Broke the Internet
The name X Æ A-Xii, often simply referred to as "X," is a combination of symbols and letters that carries a deep, multi-layered meaning, according to both Musk and Grimes.
- X: Represents the unknown variable.
- Æ: Pronounced "Ash," this is the Elven spelling of the AI (artificial intelligence) or love. Grimes has also noted that the character is used in languages like Danish and Norwegian.
- A-Xii: This part refers to the "Archangel-12," which is the internal designation for the Lockheed A-12 reconnaissance aircraft—Musk’s favorite plane and "the coolest plane ever," according to him.
The Pronunciation: Both parents have confirmed the correct way to say the full name is "X Ash A Twelve." The initial complexity led to global confusion, but the parents' explanation connects the name to technology, passion, and the future.
Techno Mechanicus (Tau): A Nod to Engineering and Philosophy
While "Techno Mechanicus" is a highly unique and futuristic name, the nickname "Tau" provides a simpler, yet equally meaningful, reference.
- Techno Mechanicus: This name is a clear nod to technology and engineering—the core of Elon Musk's professional life. "Mechanicus" suggests a master of mechanics or a devotee of the machine, aligning with his vision of a technological future.
- Tau: In mathematics and physics, the Greek letter Tau ($\tau$) is often used as a constant, and in philosophy, it can symbolize the concept of totality or the universe. Grimes has previously expressed interest in the concept of "Tau" in her music and art.
The name, revealed in the biography, confirms that even the more obscure names carry significant weight and reference points within the world of science and futurism. The combination of "Techno" and "Tau" perfectly encapsulates the intersection of advanced technology and classical thought.
The Classical and Scientific Naming Conventions
Beyond the highly conceptual names shared with Grimes, the names of his sons with Shivon Zilis and Ashley St. Clair lean towards classical history and science fiction, demonstrating a wide range of influences across the Musk family.
Strider and Seldon Lycurgus: From Fantasy to Futurism
The names chosen with Shivon Zilis offer a blend of literary and historical depth.
- Strider: This name is widely recognized as a major character's moniker in J.R.R. Tolkien's The Lord of the Rings, a fantasy epic that champions exploration and destiny. Given Musk’s own ventures into the "final frontier" of space, a name suggesting a journey or a wanderer is a fitting choice.
- Seldon Lycurgus: The inclusion of "Seldon" is a direct and powerful tribute to Hari Seldon, the founder of the psychohistory science in Isaac Asimov's Foundation series. This character's goal was to guide humanity through a dark age, a theme that resonates strongly with Musk's stated mission to save humanity through space colonization and AI safety. Lycurgus, on the other hand, was the legendary lawgiver of Sparta, tying the name to ancient principles of governance and structure.
Romulus: A Founder's Legacy
The name Romulus, reported as the son of Ashley St. Clair, is a clear historical reference.
- Romulus: In Roman mythology, Romulus was the legendary founder of Rome, along with his twin brother Remus. Naming a son Romulus taps into the idea of a founding figure, a builder of a new world, which is a powerful metaphor for Musk’s own ambitions to establish a colony on Mars. This choice grounds the futuristic family in a deep sense of historical legacy.
The diverse and rapidly expanding family of Elon Musk, with its unique and often complex naming conventions, provides a fascinating look into the mind of the man behind SpaceX and Tesla. The names themselves, whether they are futuristic codes like X Æ A-Xii, scientific references like Techno Mechanicus, or classical nods like Romulus and Seldon Lycurgus, all serve as powerful entities that capture the world's attention and reflect a life lived at the intersection of technology, history, and the unknown. As the family continues to grow, so too will the list of these extraordinary names, each one a curiosity-driven headline in its own right.
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