Question: Who was the uncle of German physicist and philosopher who was the longest-living member of the team which performed nuclear research in Germany during the Second World War?

Related documents: [0]  [DOC] Carl Friedrich Freiherr von Weizsäcker (28 June 1912 – 28 April 2007) was a German physicist and philosopher. He was the longest-living member of the team which performed nuclear research in Germany during the Second World War, under Werner Heisenberg's leadership. There is ongoing debate as to whether or not he and the other members of the team actively and willingly pursued the development of a nuclear bomb for Germany during this time. [END] 
[1]  [DOC] Viktor Freiherr von Weizsäcker (21 April 1886 in Stuttgart – 9 January 1957 in Heidelberg) was a German physician and physiologist. He was the brother of Ernst von Weizsäcker, and uncle to Richard von Weizsäcker and Carl Friedrich von Weizsäcker. (For his family tree, see Weizsäcker.) [END]  
Answer: Viktor Freiherr von Weizsäcker
Viktor Freiherr von Weizsäcker