Singer Adele, who up until now kept her son's name a secret, gave a clue when she stepped out wearing a necklace with "Angelo" on it.
A source told thesun.co.uk: "Those close to Adele have been told the baby is called Angelo. We are not sure of the significance of the name."
"She's wanted to keep it quiet but it was always going to come out sooner or later. Wearing an Angelo necklace not only backs up what is being said, it suggests she's not worried about people finding out," added the source.
She gave birth to her son in October last year.
The 24-year-old refused to reveal her first child's name at the Golden Globes, where she made her first formal public appearance after becoming a mom.
When asked the name of her baby, she replied: "It is too personal and intimate. I am not ready."
But she added: "I just call him Little Peanut."