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Brad Paisley & Kimberly Williams-Paisley Welcome a Boy

Brad Paisley & Kimberly Williams-Paisley Welcome a Boy
Brad Paisley and Kimberly Williams-Paisley
Larry Busacca/WireImage

04/17/2009 AT 03:15 PM EDT

There's a new crooner in town!

Country star Brad Paisley, 36, and According to Jim actress Kimberly Williams-Paisley, 37, have welcomed a son, her rep tells PEOPLE exclusively.

According to a statement, "Mother and baby are resting comfortably."

Born in Nashville Friday morning, he's the second child for the couple, who are also parents to 2-year-old son William Huckleberry Paisley, who's named for Mark Twain's famed character, Huck Finn.

"We're having so much fun with our little boy Huck, and we are thrilled that he will have a sibling," Williams-Paisley told PEOPLE when she announced her pregnancy last year.

"I never had [a sibling]," said Paisley, who kissed his wife's baby bump at the Country Music Association Awards last November. "I was an only child. I think [Huck] will be a great big brother. He'll learn to share, which is something I never did!"

With reporting by EILEEN FINAN

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