The "Prince of Cambridge" is a title held by Prince William, the elder son of Charles III and Diana, Princess of Wales. He was born on June 21, 1982, and became the Duke of Cambridge in 2011 upon his marriage to Catherine, Duchess of Cambridge. As a member of the British royal family, the Prince of Cambridge undertakes various royal duties and charitable work. He is second in line to the throne, following his father, Prince Charles. The couple has three children: Prince George, Princess Charlotte, and Prince Louis.