Sean Ono Lennon welcomes first child, John Lennon’s first grandchild

Sean Ono Lennon shows off the newborn on social media.

“@charlottekempmuhl and I have created a human being! His name is Aurelius! Thank you!” Lennon writes on Instagram.

Sean Ono Lennon was born in 1975 and is John Lennon's youngest son. The Beatles star's eldest son, Julian Lennon, has no children. Yoko Ono, 93, already has two other grandchildren.