Billionaire Elon Musk, a close adviser to US President Donald Trump, has another child, his 14th. His latest child, a son, is with Shivon Zilis, an executive at Musk’s Neuralink with whom he already has three other children.

“Discussed with Elon and, 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,” Zilis said in a post on X. She did not say when the child was born. Musk responded with a heart emoji. Zilis’ announcement comes two weeks after conservative influencer Ashley St. Clair said that she also recently had a child with Musk.

Musk and Zilis’ journey as co-parents first became public in 2022 when court documents revealed they had secretly welcomed twins, Strider and Azure, in November 2021. Their third child, Arcadia, was born on February 28, 2024. A source close to the couple told People that Musk “really loves Shivon.”