What was XXX's nationality?
Hans Dragendorff
Hans Dragendorff (15 October 1870 in Dorpat (Tartu), Estonia -- 29 January 1941 in Freiburg, Germany) was a Baltic German scholar who introduced the first classification system for the type of Ancient Roman pottery known as Samian ware or Terra sigillata, in 1896, using type numbers.
German