Prince William, Duke of Cambridge, KG, KT, PC, ADC (William Arthur Philip Louis; born 21 June 1982) is a member of the British royal family. He is the elder son of Charles, Prince of Wales, and Diana, Princess of Wales. Since birth, he has been second in the line of succession to the British throne.

Prince William, Duke of Cambridge, KG, KT, PC, ADC(P) (William Arthur Philip Louis; born 21 June 1982) is the elder son of Charles, Prince of Wales, and Diana, Princess of Wales. He is second in line to succeed his grandmother, Queen Elizabeth II, after his father.