NEW YORK — Sean Ono Lennon is a dad.

The 50-year-old son of late Beatles founder John Lennon announced Tuesday that he’s a father, meaning his famous dad would’ve been a grandfather for the first time.

“Okay so…Charlotte and I would like to announce that was have indeed created a Human Bean! His name is, Aurelius! Thank you!” Lennon posted on social media.

Aurelius means “golden” in Latin.

Lennon has been in a relationship with model and musician Charlotte Kemp Muhl, 39, for nearly 20 years. The two of them perform together as the band Ghost of a Saber Tooth Tiger.

Lennon is the son of his father’s second wife, 93-year-old Yoko Ono. She was at the Beatles front man’s side when he was killed by a former fan on the Upper West Side in December 1980.

John had a 63-year-old son, Julian Lennon, from his first marriage to Cynthia Lennon.

Julian told the Telegraph in 2011 that he didn’t start a family of his own due to the example set by his rock star father.

“He was young and didn’t know what the hell he was doing,” Julian said. “That’s the reason I haven’t had children yet. I didn’t want to do the same thing.”

The newborn Aurelius is John’s only known grandson. His proud father posted several photos of the boy on Instagram. Julian shared photos of his half-brother and new nephew on Instagram.

He captioned those images with four red heart emojis.

“Beautiful!” commented actor and Bijou Phillips, whose dad is the late Mamas & the Papas singer John Phillips.

Director Jim Jarmusch, comedian Whitney Cummings, socialite Paris Hilton and actor Lindsay Lohan congratulated Lennon and Mull on Instagram.

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