Prince William fully supported his wife’s wishes to go public with her cancer diagnosis. Catherine, Princess of Wales, 42, announced last week that she has been diagnosed with cancer and is currently undergoing chemotherapy and Catherine’s husband William, 41, is “proud of her courage and strength”. A source told The Sunday Times newspaper: “It was her decision, it wasn’t begrudged and he fully supported it.” And, an insider told The Telegraph newspaper: “[William] is extremely proud of his wife for the courage and strength she has shown not just this week, but since her surgery in January.” M…