A soon-to-be-released biography reveals that Tesla chief Elon Musk and the artist Grimes expanded their family with the addition of a third child.

What Happened: The biography, by author Walter Isaacson, is set to hit shelves on Sept. 12, unveiling a plethora of details about Musk's life.

Musk and Grimes reportedly have a son named Techno Mechanicus, who also goes by “Tau," according to People. 

The couple, who have been in an on-and-off relationship, previously welcomed son X Æ A-12, whose name was later changed to X Æ A-Xii and is fondly called “X.”

Also Read: Musk Shares Rare Photos Of His And Grimes' Son X Visiting Twitter HQ

This was followed by the birth of their daughter, Exa Dark Sideræl, affectionately known as “Y,”  via surrogate in December 2021, a few months after they publicly split. 

In an interview with Vanity Fair in March 2022, Grimes shared that the two "always wanted at least three or four" children. 

However, her relationship with Musk took a turn when the artist announced their breakup the day the interview surfaced.

Apart from his children with Grimes, Musk is also a father to six other children from his marriage with Canadian writer Justine Wilson, People reported. Their firstborn, Nevada Alexander, died from sudden infant death syndrome when he was just 10 weeks old.

In related news, recent legal documents revealed that one of Musk’s 18-year-old twins is seeking to change her name and gender, and wishes to sever ties with her father.

Now Read: Elon Musk's Ex-Girlfriend Grimes Says Mark Zuckerberg 'Wildly Under Qualified' To Run Metaverse

This content was partially produced with the help of AI tools and was reviewed and published by Benzinga editors.

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