John Lennon’s son Sean Ono Lennon welcomes first child and reveals his very unique name

The son of legendary Beatle John Lennon has announced the birth of his new baby boy.

Sean Lennon, 50, and his girlfriend Charlotte Kemp Mulh, 39, posted the good news to Instagram on Tuesday evening, with a picture of their new baby.

The name they've chosen for him however, has turned a few heads.

Sean captioned the post saying that the pair had 'created a human bean', adding 'his name is Aurelius, thank you!'

Aurelius comes from the Latin word for 'golden' or 'gilded', a name historically tied to Marcus Aurelius Antoninus, the Roman emperor and philosopher who ruled during the final stretch of the Pax Romana, the roughly 200-year stretch of relative peace across the Roman Empire.

The couple's announcement quickly drew a wave of messages from famous friends.

Patti Smith commented, "Oh Sean, I'm so happy for you both," while Paris Hilton wrote: "Congratulations on your new baby."

Willow Smith responded with a string of emojis, including a crying face, a heart and prayer hands.

Muhl and Sean, who are a model and a musician respectively have been dating since 2007 after the pair found romance at Coachella festival back in 2005.

Sean told MusicRadar in 2010 that the early stages of their relationship played out mostly on paper: "We developed our relationship through writing letters, postcards and emails, and it made our relationship stronger in the long run."

Muhl also shared her own set of photos, including several of her walking through water with Aurelias strapped into a baby harness, alongside a picture of him asleep.

She captioned the post with "Am convinced DNA is agentic alien quaternary code.

"The sleep-deprivation only adds to the surrealism… Burping technique tips welcome.

"Been playing him Aphex Twin and Stravinsky. Meconium is crazy."

Sean, the son of the late John Lennon and Yoko Ono, 93, has released four solo albums and five alongside his mother, plus three more with psych-rock outfit the Claypool Lennon Delirium. As a producer, his credits include Lana Del Rey's 2017 album Lust for Life, on which the pair also duet on the track Tomorrow Never Came.

Speaking to The Independent last year, Sean reflected on carrying his parents' legacy, saying his interest in music began with his father: "I always felt like music was a way of getting closer to him."

He also touched on protecting his mother's privacy these days, noting Yoko no longer wishes to engage with the press.