Sean Ono Lennon Welcomes First Child, Making John Lennon a Grandfather

Sean Ono Lennon and partner Charlotte Kemp Muhl announced the birth of their son, Aurelius, on September 1, making late Beatles legend John Lennon a grandfather for the first time. The arrival brings a rare new addition to the Lennon family nearly fifty years after the musician’s death.

A Newborn Named Aurelius and the Social Media Reveal

Musician Sean Ono Lennon and his long-term partner, model and musician Charlotte Kemp Muhl, welcomed their first child on September 1. The couple shared the news across social media platforms, pairing the announcement with an unconventional touch of humor.

Ono Lennon, who is 50 years old, posted a lighthearted message introducing the newest addition to his family. Okay so…Charlotte and I would like to announce that we have indeed created a Human Bean! His name is, Aurelius! Thank you! he wrote online. The couple also posted a photo of themselves holding the infant, and Ono Lennon shared an additional photo of Kemp Muhl, 39, in a hospital bed after she had given birth, writing “Baby Momma!”

Kemp Muhl offered a glimpse into their early days as parents on Instagram. We made a human! Am convinced DNA is agentic alien quaternary code, she wrote, adding details about sleep deprivation and infant care. The sleep deprivation only adds to the surrealism… Burping technique tips welcome. Been playing him Aphex Twin and Stravinsky. Meconium is crazy.

Roman Emperors and Ancient Inspiration Behind the Name

The choice of the name Aurelius quickly drew attention and online banter. While some internet users joked about the moniker sounding like a cinematic villain—with one netizen quipping, Sounds like a super villain name….don't let him get access to any infinity stones—and others commenting that School is going to be hard on him, the historical roots point toward antiquity.

Marcus Aurelius Antoninus served as the last emperor of the Pax Romana, an era of relative peace and stability across the Roman Empire lasting from 27 BC to 180 AD. Beyond the imperial connection, the name derives from Latin origins signifying “golden” or “gilded.”

The couple’s creative circle responded warmly to the birth announcement. Fellow musicians Patti Smith and Zak Starkey—the son of Lennon’s Beatles bandmate Ringo Starr, who left a message reading, “Amazing”—shared public congratulations. Other notable figures, including Paris Hilton, Lindsay Lohan, director Jim Jarmusch, and comedian Whitney Cummings, also sent messages to the new parents. Actor and Bijou Phillips, whose dad is the late Mamas & the Papas singer John Phillips, commented, “Beautiful!”

Musical Roots and Family History Across Generations

The arrival establishes a new generation for the Lennon family, marking John Lennon’s first known grandson. John Lennon was killed by Mark Chapman on the Upper West Side in December 1980, while standing alongside his second wife, 93-year-old Yoko Ono. John had married Ono in 1969 before leaving The Beatles later that year.

Sean Ono Lennon Welcomes First Child, Making John Lennon a Grandfather — Photo: chicagotribune.com

Sean Ono Lennon and Kemp Muhl met at the Coachella festival in 2005 and have been together for 21 years (or nearly 20 years, as noted in reports). They established a creative partnership over the ensuing years, working on several musical projects together and forming a band called The Ghost of a Saber Tooth Tiger in 2008. Sean’s musical career also spans membership in several bands including Cibo Matto, The Claypool Lennon Delirium, and his parents’ group, the Plastic Ono Band, alongside three solo albums: Into the Sun (1998), Friendly Fire (2006), and Asterisms (2024). He has performed alongside his mother Yoko Ono, and has noted, I always felt like music was a way of getting closer to him.

Sean Ono Lennon Welcomes First Baby With Charlotte Kemp Muhl

Meanwhile, John had another son, 63-year-old Julian Lennon, from his first marriage to Cynthia Lennon. Julian does not have children, revealing to the Telegraph in 2011 and to Record Collector magazine that his father’s relationship with his mother and his early family struggles made him reluctant to start a family, stating: He was young and didn’t know what the hell he was doing. That’s the reason I haven’t had children yet. I didn’t want to do the same thing.

Warm Wishes and Public Reactions to the Arrival

Julian Lennon acknowledged his newborn nephew by sharing photos of his half-brother and the new nephew on Instagram, captioning those images with four red heart emojis.

Fans across social platforms similarly celebrated the milestone for the Lennon bloodline, with one fan writing, Glad to know the Lennon bloodline will not be ending, while another added, Lennon's legacy will continue in more than one way.