Members of Kate Middleton's extended family in the North East have said they are "over the moon" with the arrival of the new royal baby.
The Duchess of Cambridge's great-grandparents grew up in Hetton-le-Hole, in County Durham.
Her first cousin twice removed John Harrison, who still lives in the village, said it was a shock at first to realise that he is now related - however distantly - to the future King of England.
The latest addition to the royal family has been named Prince George Alexander Louis, but where did the Prince get his names?
The Duke and Duchess of Cambridge have named their son George Alexander Louis, Kensington Palace said.
With the imminent arrival of the Duke and Duchess of Cambridge's firstborn here are some of the more unusual facts about royal babies.