structural:expansion
Aftermath

According to the early twentieth century historian Henry Smith Williams, history's assessment of Theodosius's character has been stained by the massacre of Thessalonica for centuries. Williams describes Theodosius as a virtuous-minded, courageous man, who was vigorous in pursuit of any important goal, but through contrasting the "inhuman massacre of the people of Thessalonica" with "the generous pardon of the citizens of Antioch" after civil war, Williams also concludes Theodosius was "hasty and choleric". It is only modern scholarship that has begun disputing Theodosius's responsibility for those events.

From the time Edward Gibbon wrote his Rise and Fall of the Roman Empire, Ambrose's action after the fact has been cited as an example of the church's dominance over the state in Antiquity. Alan Cameron says "the assumption is so widespread it would be superfluous to cite authorities. But there is not a shred of evidence for Ambrose exerting any such influence over Theodosius". Brown says Ambrose was just one among many advisors, and Cameron says there is no evidence Theodosius favored him above anyone else.

By the time of the Thessalonian affair, Ambrose, an aristocrat and former governor, had been a bishop for 16 years, and during his episcopate, had seen the death of three emperors before Theodosius. These produced significant political storms, yet Ambrose held his place using what McLynn calls his "considerable qualities considerable luck" to survive. Theodosius was in his 40s, had been emperor for 11 years, had temporarily settled the Gothic wars, and won a civil war. As a Latin speaking Nicene western leader of the Greek largely Arian East, Boniface Ramsey says he had already left an indelible mark on history.

McLynn asserts that the relationship between Theodosius and Ambrose transformed into myth within a generation of their deaths. He also observes that the documents revealing the relationship between these two formidable men do not show the personal friendship the legends portray. Instead, those documents read more as negotiations between the institutions the men represent: the Roman state and the Italian Church.