Elon Musk's 4 Baby Mamas: The Definitive, Updated List Of 14 Children And Their Mothers (2025)

The size and complexity of Elon Musk's family have become as much a topic of global curiosity as his business ventures at Tesla and SpaceX. As of December 2025, the tech mogul is the father of a reported 14 children with four different women, a rapidly expanding family that has been the subject of countless headlines. This definitive and updated article cuts through the speculation to provide the most current details on the four mothers—often referred to as the "baby mamas"—who share children with the world's richest man, detailing the latest births and the surprising new additions to the Musk family tree. The most recent and notable updates, which make this information particularly fresh, include the confirmation of a fourth child with Neuralink executive Shivon Zilis and the surprising public revelation of a child with conservative commentator Ashley St. Clair in 2024. This list provides a complete breakdown of each mother, her background, and the children they share with the eccentric billionaire.

The Four Mothers of Elon Musk's 14 Children: A Complete Profile

Elon Musk's partners are a diverse group of accomplished women, ranging from a Canadian author to a pop star and two high-level tech executives/commentators. Each relationship has contributed to his growing family, which he has publicly stated is his effort to help combat the declining birth rate.

1. Justine Wilson (First Wife and Mother of Six)

Justine Wilson, a Canadian author, was Elon Musk’s first wife. They met while attending Queen’s University in Ontario and married in 2000, divorcing in 2008.

• Full Name: Justine Wilson (formerly Justine Musk)
• Profession: Author of the fantasy novel BloodAngel and a writer for various publications.
• Musk Children: 6
• Children's Names:
  • Nevada Alexander Musk (Born 2002; tragically died of SIDS at 10 weeks old)
  • Griffin Musk & Vivian Jenna Wilson (Twins, born 2004)
  • Kai Musk, Saxon Musk, & Damian Musk (Triplets, born 2006)
• Key Detail: Their daughter, Vivian Jenna Wilson, legally changed her name and gender identity in 2022, seeking to sever ties with her father.

2. Grimes (Claire Boucher) (Musician and Mother of Three)

Grimes, whose birth name is Claire Boucher, is a Canadian musician, singer, and songwriter known for her experimental electronic style. Her relationship with Musk began in 2018.

• Full Name: Claire Elise Boucher
• Profession: Musician, Singer, Songwriter (known professionally as Grimes).
• Musk Children: 3
• Children's Names:
  • X Æ A-12 Musk (X) (Son, born 2020)
  • Exa Dark Sideræl Musk (Y) (Daughter, born 2021 via surrogate)
  • Techno Mechanicus (Tau) (Son, born 2022, confirmed in Walter Isaacson's biography in 2023)
• Key Detail: The names of their children are famously unique and often feature technical or celestial references, such as the name of the star 'Sideræl'.

3. Shivon Zilis (Neuralink Executive and Mother of Four)

Shivon Zilis is a high-ranking executive at Neuralink, one of Elon Musk's neurotechnology companies. Their relationship was revealed in 2022 when court documents showed they had filed a petition to change the names of their twins to include Musk's surname.

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• Full Name: Shivon Zilis
• Profession: Director of Operations and Special Projects at Neuralink; formerly worked at OpenAI. She is a Yale graduate.
• Musk Children: 4
• Children's Names:
  • Strider Zilis Musk & Azure Zilis Musk (Twins, born 2021)
  • Arcadia & Seldon (A daughter and a son, born in 2024, confirmed in recent reports. They were born before his child with Ashley St. Clair)
• Key Detail: The news of their fourth child, born in the first half of 2024, was a significant update, bringing their shared count to four and Musk's total to 13 at the time.

4. Ashley St. Clair (Conservative Commentator and Mother of One)

The most recent and surprising addition to the list of mothers is Ashley St. Clair, a conservative writer and commentator. Her child with Musk was publicly confirmed in early 2025, although the birth occurred months earlier.

• Full Name: Ashley St. Clair
• Profession: Conservative political commentator, influencer, and author. She is known for her work in the MAGA/right-wing sphere.
• Musk Children: 1
• Child's Name:
  • Romulus (Son, born September 2024)
• Key Detail: The birth of Romulus, confirmed in April 2025, brought Elon Musk's total number of children to 14. St. Clair had kept the birth private for several months for safety reasons before the news broke publicly.

The Growing Musk Dynasty and Topical Authority

The concept of 'Musk-eteers'—a playful term for the growing Musk progeny—is more than just a media curiosity; it ties directly into Elon Musk's stated philosophical concerns about demographic collapse. His decision to have a large family with multiple partners is a practical manifestation of his belief that "underpopulation is a much bigger crisis than people think." This ambition to proliferate his lineage has generated a complex network of familial and professional relationships.

The Intersections of Business and Family

The entanglement of Musk’s personal life with his professional life is evident in the relationship with Shivon Zilis.

• Neuralink Connection: Zilis is a key executive at Neuralink, the company developing brain-computer interfaces. Her high-level position means the co-parenting relationship exists within a shared professional ecosystem.
• OpenAI History: Zilis also has a history with OpenAI, a company co-founded by Musk, further cementing her ties to his technology empire.

This arrangement highlights a unique co-parenting model where the mothers are not just romantic partners but often integral parts of the Musk professional sphere, creating a distinct family structure among the Silicon Valley elite.

The LSI Entities and the Future of the Musk Family

The names of the children themselves serve as a fascinating topical authority map of Musk's interests and worldview. From the mythological (Romulus) to the technological (Techno Mechanicus) and the bizarre (X Æ A-12), the names reflect a commitment to the unusual and a sense of destiny. The continuous, fresh news cycle surrounding the Musk family suggests that the narrative is far from over. The recent addition of Romulus in late 2024 and the confirmation of Arcadia and Seldon earlier that year underscore a trend of rapid expansion. The public will undoubtedly continue to track the dynamics between Justine Wilson, Grimes, Shivon Zilis, and Ashley St. Clair, as they navigate co-parenting with one of the world's most influential and unconventional fathers. The future of the Musk dynasty will continue to be a subject of intense scrutiny, curiosity, and global conversation.