The `Avengers` actor - who already has 18-year-old son Indio from his first marriage to Deborah Falconer - and wife Susan welcomed a baby boy, Exton Elias Downey, into the world at 7.24am this morning (07.02.12), his representative confirmed to People.com. A source said: "Everyone is healthy and they couldn`t be happier." Exton weighed in at 7lb 5oz and measured 20 inches long. Robert, 46, had previously revealed on live television he and Susan were expecting a son, much to his producer wife`s shock. She later said: "I could never really stay mad at him, but I can tell you it genuinely wasn`t something we planned to reveal." However, the `Sherlock Holmes` star did manage to keep quiet about their name choices for the baby. He joked recently: "If I told you the name, then she would lop off my head with a machete." The actor recently admitted impending fatherhood was making him consider slowing down - though he admitted it was unlikely to happen. He said: "Life is good. With a new baby on the way, maybe I ought to think about slowing down a little. But I can`t see that happening in the short term."