John Lennon’s son Sean welcomes baby boy — ‘Beatles’ rockstar’s first grandchild — with partner Charlotte Kemp Muhl

Sean Ono Lennon, the child of John Lennon and Yoko Ono, welcomed his first child into the world. Ono Lennon, 50, and his longtime partner Charlotte Kemp Muhl, 39, announced the birth of their baby boy Tuesday evening, sharing photos of their new family on social media. “Okay so…Charlotte and I would like to announce that we have indeed created a Human Bean!” Sean wrote on Instagram Tuesday evening. “His name is, Aurelius! Thank you!” Sean also shared a photo of himself holding Aurelius, who was wrapped in a white blanket, as well as a photo of Kemp Muhl with their son in a hospital bed. “Baby Momma!” he captioned the latter. Kemp Muhl, a…