The Four Mothers: Unpacking Elon Musk's 14 Children And Their Complex Family Tree

The family life of Elon Musk, the billionaire CEO of Tesla and SpaceX, has captivated global attention, largely due to his outspoken views on population decline and his ever-expanding family. As of late 2025, the tech mogul is the father of a publicly known 14 children, a number that has grown rapidly in recent years and continues to fuel headlines.

This unprecedented family structure involves four different women, each a successful and unique individual in her own right. From a Canadian author to a Neuralink director and a conservative commentator, the mothers of Musk's children represent a diverse cross-section of his life and professional circles, making the dynamics of his personal life one of the most talked-about topics in the media today.

The Four Mothers and All 14 Children: A Complete Biography List

The following is a comprehensive, up-to-date list of the four women who have had children with Elon Musk, along with a complete roster of their 14 children, including the most recent additions announced in early 2025.

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1. Justine Wilson (Canadian Author and First Wife)

• Full Name: Jennifer Justine Musk (née Wilson)
• Born: September 2, 1972 (Age 53 as of late 2025)
• Career/Entity: Canadian author, known for her contemporary fantasy novels like BloodAngel and Lord of Bones.
• Relationship Timeline: Married Musk in 2000; divorced in 2008.
• Children with Elon Musk (6):
  • Nevada Alexander Musk: Born 2002; tragically died of SIDS at 10 weeks old.
  • Vivian Jenna Wilson (formerly Xavier Alexander Musk): Twin, born 2004 (via IVF).
  • Griffin Musk: Twin, born 2004 (via IVF).
  • Kai Musk: Triplet, born 2006 (via IVF).
  • Saxon Musk: Triplet, born 2006 (via IVF).
  • Damian Musk: Triplet, born 2006 (via IVF).
• Topical Authority Note: Justine Wilson was the first to openly discuss her relationship with Musk and the use of in vitro fertilization (IVF) to have their five surviving children.

2. Grimes (Musician and Artist)

• Full Name: Claire Elise Boucher
• Born: March 17, 1988 (Age 37 as of late 2025)
• Career/Entity: Canadian singer, songwriter, record producer, and visual artist. Known for her experimental music style.
• Relationship Timeline: Began dating in 2018; had an on-again, off-again relationship before their final public separation.
• Children with Elon Musk (3):
  • X Æ A-Xii (nicknamed 'X'): Son, born May 4, 2020. His original name, X Æ A-12, was later changed to comply with California law.
  • Exa Dark Sideræl Musk (nicknamed 'Y'): Daughter, born December 2021 (via surrogate).
  • Techno Mechanicus (nicknamed 'Tau'): Son, born in 2023; his existence was revealed later in 2023.
• Topical Authority Note: The unique names of their children, particularly X Æ A-Xii and Exa Dark Sideræl, generated massive media coverage and became a global cultural talking point.

3. Shivon Zilis (Tech Executive and Venture Capitalist)

• Full Name: Shivon Alice Zilis
• Born: February 8, 1986 (Age 39 as of late 2025)
• Career/Entity: Canadian technology executive, venture capitalist, and Director of Operations and Special Projects at Neuralink. She also worked at OpenAI.
• Relationship Timeline: Their relationship was largely kept private until court documents revealed the birth of their twins.
• Children with Elon Musk (4):
  • Strider Musk: Twin, born November 2021 (via IVF).
  • Azure Musk: Twin, born November 2021 (via IVF).
  • Arcadia Musk: Daughter, born sometime after the twins.
  • Seldon Lycurgus Musk: Son, born in early 2025 (latest publicly confirmed child).
• Topical Authority Note: Zilis's professional connection to Musk through Neuralink and OpenAI highlights the blending of Musk's professional and personal life, particularly in the realm of Artificial Intelligence (AI) and biotechnology.

4. Ashley St. Clair (Conservative Influencer and Author)

• Full Name: Ashley St. Clair
• Born: 1993 or 1994 (Age 31 as of late 2025)
• Career/Entity: Conservative political commentator, influencer, author, and podcast host of Bad Advice.
• Relationship Timeline: Details are highly private; the relationship was only revealed when St. Clair announced the birth of her child in February 2025.
• Child with Elon Musk (1):
  • Romulus Musk: Son, born in September 2024.
• Topical Authority Note: Her announcement in February 2025 added a 14th child to Musk's roster and sparked controversy due to reports of a possible non-disclosure agreement (NDA) and an alleged $15 million offer to keep the child's paternity a secret.

The Expanding Family: A Timeline of Parenthood and IVF

The story of Elon Musk's family is not just a list of names; it is a complex narrative intertwined with personal tragedy, modern science, and the pursuit of a larger mission. The chronological expansion of his family reveals a clear pattern of intentional procreation.

Musk's first experience with parenthood was with his first wife, Justine Wilson. After the devastating loss of their first son, Nevada Alexander, to SIDS, the couple turned to In Vitro Fertilization (IVF) to have their subsequent children. This decision resulted in the birth of the twins, Griffin and Vivian Jenna, followed by the triplets, Kai, Saxon, and Damian, all within a four-year span. IVF became a key entity in the formation of this part of the family.

Years later, his relationship with the avant-garde musician Grimes brought a new level of public fascination. The births of X Æ A-Xii and Exa Dark Sideræl (Y), the latter via a surrogate, cemented Musk's reputation for unconventional family choices. The surprise revelation of their third child, Techno Mechanicus (Tau), in 2023, confirmed that the family was still growing, even after their public breakup.

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The Blending of Professional and Personal Spheres

A notable aspect of Musk's family life is the close proximity of his partners to his professional ventures. This is most evident with Shivon Zilis, a high-ranking executive at his neurotechnology company, Neuralink.

Zilis, a respected figure in the world of Venture Capital and AI development, shares four children with Musk, including the most recent addition, Seldon Lycurgus, born in early 2025. The twins, Strider and Azure, were born just weeks before the birth of Musk's second child with Grimes, Exa Dark Sideræl, highlighting a period of overlapping personal relationships.

This dynamic has led to discussions about corporate governance and personal boundaries, particularly given Zilis's influential role within the Musk ecosystem of companies like Neuralink and OpenAI, where she was also a founding member. Her ability to navigate a high-profile career while raising four young children with one of the world's busiest men is a testament to her professional and personal management skills.

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The Philosophy Behind the Prolific Parenthood

Elon Musk has often publicly stated that his desire for a large family is driven by a genuine concern over declining birth rates and a potential population collapse, which he views as one of the greatest threats to human civilization.

He has framed his personal choices as a direct action against this demographic crisis, frequently using his platform on X (formerly Twitter) to promote the idea of having more children. This philosophy, which he calls "doing my part," provides the ideological context for his expanding family tree.

The recent announcement by conservative commentator Ashley St. Clair of her son, Romulus, in February 2025, further complicates the narrative. While her professional background aligns with some of Musk's political leanings, the reports of a substantial financial offer for secrecy introduce a new layer of complexity regarding privacy and public disclosure in the lives of the world's elite.

Ultimately, the story of Elon Musk's 14 children and their four mothers is a modern saga of ambition, unconventional relationships, advanced reproductive technology, and a billionaire's mission to influence the future of humanity, one child at a time.