Here’s a refined overview, around 500 words, of Elon Musk’s newsworthy announcement—no links:
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On February 28, 2025, Shivon Zilis, a senior executive at Neuralink, confirmed the birth of her fourth child with Elon Musk—a son named Seldon Lycurgus—making this Musk’s 14th known child newsweek.com+15people.com+15thecut.com+15.
Shivon’s post on X (formerly Twitter) announced the news in conjunction with their daughter Arcadia’s first birthday. She wrote that, “in light of beautiful Arcadia’s birthday, we felt it was better to also just share directly about our wonderful and incredible son Seldon Lycurgus. Built like a juggernaut, with a solid heart of gold. Love him so much ❤️.” Elon responded with a simple heart emoji foxbusiness.com+6people.com+6hola.com+6.
This marks the couple’s fourth child together. They share twins Strider and Azure, born via IVF in November 2021, plus daughter Arcadia, born in February 2024 bild.de+10people.com+10eonline.com+10. The twins’ identities were only publicly revealed in 2023, several months after their birth bild.de+15people.com+15people.com+15.
With this birth, Elon Musk’s total known number of children rises to 14, spanning four different women: six with first wife Justine Wilson; three with singer Grimes; four with Shivon Zilis; and one more with author/influencer Ashley St. Clair, who filed for custody earlier this year reddit.com+15pagesix.com+15foxbusiness.com+15.
Shivon Zilis, aged 39, holds senior roles at Neuralink and previously advised on AI and machine learning. She met Musk in 2016 through OpenAI and holds a Yale degree people.com+1en.wikipedia.org+1. Court records reveal the twins were conceived via IVF—and that the pregnancy was not publicly known until documents surfaced in mid-2022 people.com+9en.wikipedia.org+9reddit.com+9.
Musk has discussed encouraging intelligent people to have kids, citing concerns about declining birth rates. Shivon reportedly agreed to have children with him for similar reasons eonline.com+15people.com+15foxbusiness.com+15.
Meanwhile, the existence of Musk’s 13th child, fathered by Ashley St. Clair, has also been confirmed. Her son Romulus was reportedly born in mid‑2024, and she has sought full custody. Musk acknowledged potential paternity and has reportedly made financial arrangements eonline.com+7en.wikipedia.org+7en.wikipedia.org+7.
Despite extensive public attention, Musk has had a mixed relationship with fatherhood. His eldest daughter, Vivian Wilson, has publicly distanced herself, legally changing her surname in 2022 vanityfair.com+1thecut.com+1. Custody disputes with Grimes and conflict with St. Clair suggest personal tensions amid this expanding family tree vanityfair.com+2thedailybeast.com+2pagesix.com+2.
In summary:
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Fourth child with Shivon Zilis: Seldon Lycurgus, born around late February 2025.
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Shared children with Zilis: twins Strider & Azure (2021), Arcadia (2024), plus Seldon.
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Total known children: 14, across four women.
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Family complexity: IVF, surrogacy, custody disputes, and public distancing from some offspring characterize Musk’s personal life.
This announcement highlights Musk’s strengthening family with Zilis—even amid broader scrutiny over personal, legal, and ethical complexities tied to his ever-expanding household and public profile.
