14 kids, 4 baby mamas: Who's who in the Elon Musk's ever-expanding family?

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On February 28, 2025, Musk’s partner, Neuralink executive Shivon Zilis, announced that they had welcomed their fourth child together, Seldon Lycurgus Musk. This marks Musk’s 14th known child, reinforcing his publicly stated belief in combating the “underpopulation crisis” by having as many children as possible.

Elon Musk, the billionaire entrepreneur and CEO of Tesla and SpaceX, has long been known for his ambitious goals—whether it’s colonizing Mars, revolutionizing transportation, or advancing AI. However, Musk’s personal life has garnered just as much attention as his business ventures. His growing brood of children has fascinated the public, especially given the diversity of his partners and the unique names of his offspring.

At a glance: The timeline of Musk babies

2002 – Nevada Alexander Musk (with Justine Wilson) – Passed away at 10 weeks old due to SIDS.

2004 – Twins: Griffin Musk and Vivian Jenna Wilson (with Justine Wilson).

2006 – Triplets: Kai Musk, Saxon Musk, and Damian Musk (with Justine Wilson).

2020 – X Æ A-Xii Musk (with Grimes).

2021 – Twins: Strider Musk and Azure Musk (with Shivon Zilis).

2021 – Exa Dark Sideræl Musk (with Grimes) – Born via surrogate.

2022 – Techno Mechanicus Musk (with Grimes) – Birth was kept secret until 2023.

2024 – Arcadia Musk (with Shivon Zilis).

2024 (September) – R.S.C. Musk (with Ashley St. Clair) – Birth kept secret until February 2025.

2025 (February 28) – Seldon Lycurgus Musk (with Shivon Zilis).

In this deep dive, we take a closer look at Musk’s four baby mothers, the children he shares with them, and the complex relationships that define his growing family.

Justine Wilson: The First Marriage and the Tragedy That Shaped Musk

Before Musk became the world’s richest man and a pop culture figure, he was married to Canadian author Justine Wilson. The two met while studying at Queen’s University in Ontario, Canada, and eventually tied the knot in 2000. Their marriage lasted eight years, but it was filled with challenges, including a devastating personal loss.

In 2002, Justine gave birth to Nevada Alexander Musk, the couple’s first child. However, tragedy struck when Nevada passed away at just 10 weeks old due to Sudden Infant Death Syndrome (SIDS). The loss was heartbreaking, but Justine and Elon continued trying for more children through IVF treatments.

Between 2004 and 2006, the couple welcomed five more children:

Twins (Griffin Musk and Vivian Jenna Wilson) – born in 2004

Triplets (Kai Musk, Saxon Musk, and Damian Musk) – born in 2006

Despite their large family, Musk and Wilson’s marriage fell apart by 2008. In a candid essay for Marie Claire, Justine later described how Musk became increasingly controlling, once telling her on their wedding night, “I am the alpha in this relationship.”

Their divorce was bitter, and Musk later married British actress Talulah Riley, but they did not have children together.

In 2022, one of the twins, Vivian Jenna Wilson, made headlines when she legally changed her name and gender, distancing herself from Musk entirely. She dropped the surname “Musk” and took her mother’s maiden name, Justine Wilson.

Grimes: A Sci-Fi Love Story Turned Custody Battle

Elon Musk’s most high-profile relationship in recent years has been with Claire Boucher, better known as the electronic musician Grimes. Their relationship, which began in 2018, was unconventional from the start—marked by their shared interest in AI, space, and technology.

Together, Musk and Grimes have three children, all with names as futuristic as their parents’ interests:

X Æ A-Xii Musk (born May 2020) – Originally named X Æ A-12, the name had to be slightly modified to comply with California state law. He is often referred to as “X.”

Exa Dark Sideræl Musk (born December 2021) – Also known as “Y,” she was born via surrogate.

Techno Mechanicus Musk (born June 2022) – Nicknamed “Tau,” his birth was kept secret for a while before being revealed in 2023.

Their relationship was a rollercoaster, described as “semi-separated” in 2021 but still connected in a fluid manner. However, things took a turn for the worse in September 2023, when Grimes sued Musk over custody of their children. Musk countersued, seeking full custody, arguing that the children should live in Texas instead of California. The legal battle made headlines, with Grimes later publicly pleading for access to their son, X, after he was photographed in the White House with Musk.

Shivon Zilis: The Discreet Neuralink Executive Who Shares Four Kids with Musk

Unlike Musk’s other high-profile relationships, his connection with Shivon Zilis was kept under wraps for a long time. A former Yale University graduate and an executive at Neuralink, Shivon shares Musk’s passion for artificial intelligence and brain-computer interfaces.

In November 2021, it was revealed that she and Musk secretly welcomed twins through IVF, just weeks before Musk had his second child with Grimes. The twins were named:

Strider Musk

Azure Musk

Their existence was only discovered through court documents, in which Musk and Zilis filed a petition to give the children his last name.

Less than three years later, in February 2024, Shivon gave birth to their third child, Arcadia Musk. One year later, on February 28, 2025, she confirmed the arrival of their fourth child, Seldon Lycurgus Musk.

Shivon remains close to Musk and even moved to his $35 million Austin, Texas, compound in 2023, where many of his children are expected to live together.

Ashley St. Clair: The Most Controversial Baby Mama Yet?

The latest and most surprising addition to Musk’s roster of baby mothers is Ashley St. Clair, a 26-year-old conservative influencer known for her MAGA views and connections to Donald Trump’s inner circle.

On February 14, 2025, St. Clair dropped a bombshell by revealing that she had given birth to Musk’s child five months earlier, in September 2024. The baby, a boy named R.S.C., was kept secret to “protect his privacy,” according to St. Clair.

Her announcement caused a stir online, especially after Musk did not immediately acknowledge the child’s existence. The situation escalated when a judge ordered Musk to appear in court for a custody hearing in May 2025, regarding R.S.C.’s parental arrangements.

St. Clair, who previously had a child with another partner, reportedly lives in a luxury Manhattan apartment with a full-time nanny. Neighbors have speculated that she received a Tesla Cybertruck from Musk and that she may have been financially supported by him even before the birth of their child.

Musk’s Philosophy on Parenthood: Repopulating the Earth?

Musk has frequently spoken about his concerns regarding declining birth rates, stating that “civilization will crumble if people don’t have more children.” He has actively pursued fatherhood, viewing it as his duty to ensure humanity’s future.

A close friend of Musk recently told The Mail on Sunday: “He will keep fathering children for as long as he can, and he’s only 53, so technically, he could keep going for another 30 years.”

While some admire Musk’s dedication to having a large family, others criticize his approach, noting that his children are spread across multiple households and that some relationships, like the one with Grimes, have resulted in legal disputes.

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