https://www.discovermagazine.com/the-sciences/the-hierarchy-of-the-1-200-year-long-roman-empire
https://www.msn.com/en-us/news/world/flavia-sabora-lost-roman-town-is-rediscovered-under-a-crop-field-in-spain/ar-AA12HTw0
https://menafn.com/1104955024/Prince-Hassan-Attends-Frontiers-Of-The-Roman-Empire-Book-Launch
https://www.amazon.com/Frontiers-Roman-Empire-Economic-Ancient/dp/0801857856
https://www.amazon.com/Frontiers-Imperial-Rome-David-Breeze/dp/1848844271
If it’s the ROMAN era, wouldn’t it be a ROMAN festival? Can’t say I’ve ever used the the term “Romanian”.