Edward Norton sure knows how to keep his personal life under wraps, even when its good news. It has been revealed that the Moonrise Kingdom star and his fiancée welcomed a baby boy back in March.

I wasn't until shortly before the birth that it was revealed the private couple were expecting. At the time a source told Us Weekly that "Ed is really excited for fatherhood. He helped pick out a stroller for the baby!"

After dating Shauna Robertson, a producer who has produced such films as Forgetting Sarah Marshall and Superbad, for six years, the pair became engaged in 2011.  However, according to US Weekly, the 43-year-old Norton has never discussed his relationship with the press.

According to the Daily Mail, the actor is not a big fan of the recognition that comes with fame, once stating, "If I ever have to stop taking the subway, I'm gonna have a heart attack."

Norton is currently working on Birdman and, when the Los Angeles Times tried to get a comment on the birth, his representative stated that he could not confirm the rumors that Robertson has delivered a son and remarked that the couple do not comment on their personal lives.