Billionaire Elon Musk shares five children with author Justine Wilson. Their first child Nevada Alexander died when he was 10 months old. Musician and songwriter Claire Elise Boucher alias Grimes is the mother of three of Musk's children and Neuralink director Shivon Zilis birthed his three children. Influencer Ashley St Clair claimed she gave birth to Musk's 13th child.