They're the most stable of couples by celebrity standards, and their family just grew by one. Black Eyed Peas singer Fergie and actor hubby Josh Duhamel have a new baby boy by the name of Axl Jack Duhamel, reports E! Online. It's the first child for the pair, who have been married since 2009. She is 38, and he is 40, notes People. Axl Jack weighed in at 7 pounds, 10 ounces. (Duhamel is looking forward to one weird thing in particular about being a dad, and his wife, born Stacey, has officially changed her name to "Fergie.")