Kate, the wife of Prince William, was admitted to hospital on Monday to give birth to the couple"s third child and the latest member of Britain"s royal family The Duke and Duchess of Cambridge, as the couple are officially known, drove from their home Kensington Palace in central London to St Mary"s Hospital in west London London: Kensington Palace said on Monday the Duchess of Cambridge has given birth to her third child, a boy weighing 8 pounds, 7 ounces (3.8 kilograms). The palace says the child was born at 11:01 a.m. (1001 GMT), a few hours after Kate was admitted to London"s St. Mary"s Hospital in labor. Prince William was present for the birth of his son, who is fifth in line to the throne. The palace said: "The Queen, The Duke of Edinburgh, the Prince of Wales, the Duchess of Cornwall, Prince Harry and members of both families have been informed and are delighted with the news."