Elon Musk’s ever-growing brood of children has expanded once again after he confirmed the arrival of a new son named Seldon Lycurgus. The baby is believed to be his 14th child and the fourth he has had with Shivon Zilis, a Canadian executive at Neuralink, his neurotechnology firm. The billionaire, now working with Donald Trump as the head of the department of government efficiency or Doge, has forged a reputation for giving his children highly unusual names, including Exa Dark Sideræl, Strider, Azure, and X Æ A-12, known as X for short.