Rudolf von Ribbentrop’s father Joachim was Hitler’s ambassador in London from 1936 to 1938. He was then made the Third Reich’s Foreign Minister but was executed at Nuremberg in 1946 for helping to arrange the Holocaust. His son, who died at the age 98 on May 20 according to German reports, wrote about his experience of seeing his father hang at Nuremberg in his biography My Father Joachim von Ribbentrop.