The baby boy was born at 4:24 p.m. on Monday, July 22, weighing 8 lbs., 6 oz.
“We could not be happier,” Prince William said in a statement after his son was born.
For his part, Prince Charles expressed his excitement at becoming a grandfather for the first time.
The Duchess of Cambridge was admitted to hospital on Monday morning after experiencing contractions.
Prince William was beside his wife during the labor and will spend the night in the maternity ward.
A press release was sent out after the birth, followed by a statement signed by the royal physicians giving the time of the birth and the sex of the newborn, which was placed on an easel at Buckingham Palace, the same used at William’s birth.
The baby’s name won’t be announced for several days but names like John, Charles, Philip, or Edward are among the favorites.
When William was born a week passed before the world got to know his name, and one month in the case of Prince Charles.