Georgi D. Sotirov, Ph.D. (George D. Sotiroff; Bulgarian: Георги Д. Сотиров) was born on 27 July 1910 in the city of Sofia.
Georgi Sotirov followed economics and law in Bulgaria, then emigrated to Switzerland where he married the Hungarian Irene Tordai.
After World War II, Sotirov remained in Switzerland where he worked at the International Red Cross and at the headquarters of the Organization of the United Nations in Geneva.
He then moved to Canada where he worked as an economist for the provincial governments of Saskatchewan and British Columbia, and later on in the field of public health.
[1] Despite not being a historian, Sotirov wrote several books on historical themes related to ancient and paleo-Balkan history.