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Prince William is one proud royal papa.
"We could not be happier," the new dad said Monday following the birth of his first child with Kate Middleton.
Their son, whose name has yet to be announced, was born at 4:24 p.m. (British Summer Time), a little more than 10 hours after the Duke and Duchess of Cambridge arrived at St. Mary's Hospital in London, with Kate already in labor.
William was present for the birth and, according to a Kensington Palace spokesman, he will be spending the night at the hospital with his wife and newborn son.