The former Boyzone singer's son arrived a week early, making the Love Child actor a fourth time father.
Keating, 40, is father to Jack, 18, Marie, 16 and Ali, 11 from his first marriage.
Ronan Keating and wife Storm have revealed their baby boy's name.
The couple took to Instagram to share the moniker alongside a photo of their entire family.
"We've finally all agreed on a name. Introducing:Cooper Archer Uechtritz KEATING," Storm, 35, wrote.
The former Boyzone singer's son arrived a week early, making the Love Child actor a fourth time father.
Keating, 40, is father to Jack, 18, Marie, 16 and Ali, 11 from his first marriage.