Elon Musksecretly welcomed twins last year.
The papers reveal that in April, Musk and Zilis –– who is the project director at his Neuralink company –– asked a Texan county court to change their babies' names so they would “have their father’s last name and contain their mother’s last name as part of their middle name.”
The twins' sexes were not made public and their names were redacted from the documents.
An Austin judge granted their request in May, perInsider.
A representative for Musk did not immediately respond to PEOPLE’s request for comment. Zilis also did not immediately respond.
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Kevin Mazur/MG22/Getty; Shivon Zilis/shivonzilis.com

At the time, she also said that she and Musk want more babies — telling the outlet, “we’ve always wanted at least three or four” — but the day the article was released,she tweeted that they had broken up again.
Elon Musk/Twitter

After welcoming the twins, Musk is nowa father of 10. He shares 18-year-old twins Vivian Jenna Wilson and Griffin Musk, along with triplets Kai, Damian, and Sax Musk, who were born in 2006, with his first wife, Justine Wilson. The two had another son, Nevada Musk, who died at 10 weeks.
Musk does not often discuss his own family, but he does have strong opinions on increasing the birth rate — stating that there are “not enough people” in the world atWall Street Journal’s annual CEO Councilin December 2021.
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“I think one of the biggest risks to civilization is the low birth rate and the rapidly declining birthrate,” he said. “Please look at the numbers –– if people don’t have more children, civilization is going to crumble, mark my words.”
source: people.com