by Aaron Irving in Family

Elon Musk has confirmed another addition to his growing family. He and Shivon Zilis, a Neuralink executive, have welcomed their fourth child together, a son named Seldon Lycurgus. This brings Musk's total confirmed children to 13. Zilis announced the news on X, also revealing the name of their previously unannounced third child, Arcadia. The announcement came alongside Arcadia's birthday. The pair have used IVF for their children, a method Musk has reportedly used for nine of his children. Zilis has been a visible presence in Musk's life, attending events such as President Trump's inauguration and a meeting with Indian Prime Minister Modi. Musk's expanding family comes amidst a paternity lawsuit filed by Ashley St. Clair, who alleges Musk is the father of her child. Musk has publicly stated his concern about declining birth rates.