Prince George, Princess Charlotte and Prince Louis have quizzed Prince William about homelessness, the future King revealed in his new documentary. “Prince William: We Can End Homelessness” is a two-part documentary which aired tonight and is set to air again tomorrow. During the insightful documentary, William, 42, revealed that his three children have quizzed him about the issue of homelessness. He said: “When I was very small, my mother started talking about homelessness, much like I do now with my children on the school run. “We saw people on the street. When you’re that small you’re just …