A wooden marker stands over the grave of Paula Hitler, sister of Adolf Hitler, in a cemetery in Berchtesgaden, Upper Bavaria. Paula was the only full sibling of Hitler's to survive to adulthood. She said they bickered as children, but were very fond of each other. "Although he had captured the public, who believed him their protector and friend, I knew what he wanted, and I was worried not only for his physical safety but also about his sanity," she once said.