Grimes and Elon Musk <br />Welcome Baby 'X Æ A-12' The Tesla founder took to <br />Twitter to share the news. Elon Musk, <br />via Twitter The tech guru also posted that <br />the couple named their newborn <br />son X Æ A-12 Musk. Grimes announced her pregnancy in January <br />before confirming in a March 'Rolling Stone' <br />interview that Musk was the father. The couple publicly <br />revealed their <br />relationship in <br />May 2018. Musk has five sons from his <br />previous marriage to author <br />Justine Wilson.
