John Lennon becomes a grandfather as son Sean welcomes baby

• Sean Ono Lennon and his partner Charlotte Kemp Muhl have announced the birth of their baby boy, Aurelius.
• The newborn is the first grandchild of the late Beatles musician John Lennon .
• The couple shared the news on social media on Tuesday evening alongside photos with their son.
• Sean, 50, and Muhl, 39, have been together since 2007 and have collaborated on numerous musical projects.
• Celebrities including Patti Smith, Paris Hilton, and Willow Smith were among those who sent congratulations to the couple.

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