At 6:00 am today, Prince William and his wife Kate drove to St Mary Hospital in central London to prepare for the delivery. At 4:24 pm She gave birth to their first baby boy. The royal baby will be third in line for the throne. By this Royal birth, Prince Charles have become a grandfather for the first time. This made him very proud and joyful. Prince Charles on the royal baby's birth: "My wife and I are overjoyed" Some said that Prince William and his wife spent some time with the royal baby before telling the family.