Elon Musk's 13th child, a son with Ashley St. Clair, is named Romulus, revealed the Wall Street Journal. Romulus, in Roman mythology, is the founder of Rome. A paternity test confirmed Musk's parentage with 99.

Elon Musk has never been shy when it comes to his feelings about having more kids — and has reportedly spoken privately about wanting to produce a "legion-level" of children before the end of the worl

Elon Musk has welcomed many children over the years with Justine Wilson, Grimes, Shivon Zilis and Ashley St. Clair, respectively. The entrepreneur wed Wilson in January 2000, and the former couple welcomed son Nevada two years later.