Classical art historian and archaeologist; associated with the Nazis during the DAI in Athens. Jantzen was the son of the medievalist art historian Hans Jantzen. During the Nazi era in Germany, Jantzen was asssigned to the German Archaeological Institute (Deutsches Archäologisches Institut or DAI) under Walther Wrede. He served there during the highly politicized years of the institute, working as a military official. When Wrede left Greece during the German withdrawal from Greece in 1944, Janzten and Roland Hampe remained behind to run the Institute. It was they who handed it over to the Greek authorities. After the war, Jantzen received his Ph.D. from the university in Marburg in 1953.
[dissertation:] Griechische Greifenkessel. University of Marburg, 1953. Published as same, Berlin: Gebr. Mann, 1955; Einhundert Jahre [DAI] Athener Institut, 1874-1974. Mainz: Ph. von Zabern, 1986; ägyptische und orientalische Bronzen aus dem Heraion von Samos. Bonn: Deutsches Archäologisches Institut/R. Habelt, 1972; Griechische Griff-Phialen. Berlin: De Gruyter, 1958.
"German Archaeological Institute -- Athens." Encyclopedia of the History of Classical Archaeology. Nancy Thomson de Grummond, ed. Westport, CT: Greenwood Press, 1996, vol. 1, pp. 495.