The Complete Guide To Elon Musk's Sons: 10 Names And The Shocking 2025 Family Updates

The conversation around Elon Musk’s family has never been more intense, and as of the latest updates in early 2025, the number of his children stands at a staggering 14. This complex and rapidly growing family tree includes a total of ten sons, each with a unique story, from the tragically short life of his firstborn to the famously complex naming conventions of his youngest. The most recent news, including the confirmation of a new son named Romulus and the reveal of two new children with Neuralink executive Shivon Zilis, makes the full picture of the Musk dynasty a fascinating study in modern celebrity and succession. This article provides the most current and definitive guide to all of Elon Musk’s sons, detailing their names, mothers, birth years, and the latest public information, ensuring you have the freshest, most accurate breakdown of the billionaire's heirs.

The Full Biography of Elon Musk's Sons (Updated 2025)

The Tesla and SpaceX CEO has welcomed children with four different partners. Below is the complete list of his sons in chronological order, detailing their mothers and significant biographical notes.

• Nevada Alexander Musk
  • Mother: Justine Musk (née Wilson)
  • Born: May 2002
  • Note: Nevada tragically died of Sudden Infant Death Syndrome (SIDS) at just 10 weeks old.
• Griffin Musk
  • Mother: Justine Musk (née Wilson)
  • Born: April 2004 (Twin with Vivian Jenna Wilson)
  • Age (as of 2025): ~20
  • Note: Griffin is part of the first set of twins born via IVF.
• Kai Musk
  • Mother: Justine Musk (née Wilson)
  • Born: January 2006 (Triplet with Saxon and Damian)
  • Age (as of 2025): ~19
  • Note: Kai is one of the triplets born via IVF.
• Saxon Musk
  • Mother: Justine Musk (née Wilson)
  • Born: January 2006 (Triplet with Kai and Damian)
  • Age (as of 2025): ~19
• Damian Musk
  • Mother: Justine Musk (née Wilson)
  • Born: January 2006 (Triplet with Kai and Saxon)
  • Age (as of 2025): ~19
• X Æ A-Xii Musk (Nickname: 'X')
  • Mother: Grimes (Claire Boucher)
  • Born: May 4, 2020
  • Age (as of 2025): ~4
  • Note: His name was originally X Æ A-12, later legally changed to X Æ A-Xii to comply with California law. The 'Æ' is pronounced 'Ash'.
• Strider Musk
  • Mother: Shivon Zilis
  • Born: November 2021 (Twin with Azure)
  • Age (as of 2025): ~3
  • Note: Revealed publicly in 2022 alongside his twin sister, Azure.
• Techno Mechanicus Musk (Nickname: 'T')
  • Mother: Grimes (Claire Boucher)
  • Born: 2021 (Via surrogate)
  • Age (as of 2025): ~3
  • Note: His existence was subtly confirmed in a biography in 2023.
• Seldon Lycurgus Musk
  • Mother: Shivon Zilis
  • Born: Early 2024
  • Age (as of 2025): ~1
  • Note: Confirmed in early 2025 as one of two new children with Shivon Zilis, including a daughter named Arcadia.
• Romulus Musk
  • Mother: Ashley St. Clair
  • Born: September 2024
  • Age (as of 2025): Less than 1 year
  • Note: His birth was announced by journalist Ashley St. Clair in February 2025, making him one of the newest additions to the Musk family.

The Most Shocking and Recent Updates to the Musk Family Tree

The period from late 2024 into early 2025 has brought the most significant and surprising revelations about the expansion of the Musk family, solidifying the Tesla CEO's commitment to his philosophy that smart people should have more children.

The Two New Sons Confirmed in 2025

The latest updates have confirmed the birth of two new sons who will undoubtedly shape the narrative of "Elon's son" for years to come.

Romulus Musk: The Newest Addition

In February 2025, conservative journalist Ashley St. Clair announced on X (formerly Twitter) that she had given birth to a son named Romulus in September 2024, confirming Elon Musk as the father. This revelation was a major shock to the public, as the relationship had not been widely known. The name Romulus, drawing from the legendary founder of Rome, perfectly fits the pattern of historical and philosophical names favored by Musk and his partners.

Seldon Lycurgus Musk: The Fourth Child with Shivon Zilis

Simultaneously, it was confirmed that Musk and Neuralink executive Shivon Zilis had welcomed two new children in 2024: a daughter named Arcadia and a son named Seldon Lycurgus. Zilis and Musk already shared twins, Strider and Azure, born in 2021. The confirmation of Seldon Lycurgus, a name with deep roots in science fiction and ancient Greek law, underscores the intellectual and often esoteric naming tradition that defines the Musk children.

X Æ A-Xii and His Unexpected Public Life

The son with the most famous name, X Æ A-Xii, nicknamed 'X', has recently been seen in the public eye more frequently. Born to the billionaire and musician Grimes, X's name is a complex blend of the unknown variable (X), the Elven spelling of 'Ai' (love/artificial intelligence), and the A-12 reconnaissance aircraft. In a major political update, X Æ A-Xii was recently seen accompanying his father on stage at a political rally, bringing an unexpected spotlight to his young life. These public appearances, often at significant events, suggest that the young son is already being exposed to the high-stakes world of his father's business and political interests.

The Complex Narrative of Elon Musk's Eldest Sons

The first set of sons, born to author Justine Musk, have largely maintained a life out of the public spotlight, but their stories are a crucial part of the Musk family history.

The Triplets: Kai, Saxon, and Damian Musk

The triplets, Kai, Saxon, and Damian, are now teenagers and are part of the first generation of Musk's heirs. Born in 2006 via IVF, they represent the early foundation of his family.

Griffin Musk and the Name Change of His Twin

Griffin Musk, twin to Vivian Jenna Wilson, is one of the oldest living sons. His twin, Vivian, made headlines in 2022 when she legally changed her name and gender, officially becoming a daughter and requesting to sever ties with her father. This widely reported event, though concerning his child who is now a daughter, is a significant part of the family narrative and often comes up when discussing "Elon's son." Musk has spoken publicly about the situation, noting the ideological rift.

The Future of the Musk Dynasty

With 14 children and 10 sons, the question of the Musk dynasty and succession planning for his vast empire—which includes SpaceX, Tesla, X (Twitter), Neuralink, and The Boring Company—is more relevant than ever. The unique names and the public-facing lives of some of the youngest children, like X Æ A-Xii and Romulus, hint at a future where the children of the world's richest man will play a role in his ventures, whether in technology, space exploration, or public discourse. The sheer size and complexity of the family ensure that the story of "Elon's son" will continue to evolve and capture global attention for decades to come.