Elon Musk and Shivon Zilis have revealed the birth of their fourth child, Seldon Lycurgus, on their third child Arcadia's first birthday. This makes Musk a father of 14 children with four different women. Zilis is the director at Musk's company Neuralink and the couple appears to share a strong bond.Elon Musk and Shivon Zilis have revealed the birth of their fourth child, Seldon Lycurgus, on their third child Arcadia's first birthday. This makes Musk a father of 14 children with four different women. Zilis is the director at Musk's company Neuralink and the couple appears to share a strong bond.