Kimberly Williams-Paisley has second son

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

Born in Nashville, 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.