John Alexander References John Alexander emperor of Bulgaria Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: Stefan Dušan/ Background and early years…with the new Bulgarian emperor, John Alexander, by marrying his sister Helen in 1332. Relations with Bulgaria remained untroubled to the end of Dušan’s reign. Read More…with the new Bulgarian emperor, John Alexander, by marrying his sister Helen in 1332. Relations with Bulgaria remained untroubled to the end of Dušan’s reign. Read More