William Arthur Philip Louis, Duke of Cambridge (born 1982), elder son of Prince Charles and Diana, Princess of Wales. He married Catherine Middleton in April 2011 and the couple had a son, Prince George Alexander Louis, in July 2013, and a daughter, Princess Charlotte Elizabeth Diana, in May 2015.
Definition of William, Prince in US English:
William, Prince
proper nounˈwilyəm
William Arthur Philip Louis, Duke of Cambridge (born 1982), elder son of Prince Charles and Diana, Princess of Wales. He married Catherine Middleton in April 2011 and the couple had a son, Prince George Alexander Louis, in July 2013, and a daughter, Princess Charlotte Elizabeth Diana, in May 2015.