This city served as the meeting place for a namesake 1827 treaty between Russia and Turkey which guaranteed Greek autonomy, and was the site of a 323 CE defeat of Licinius by Constantine.  
Located on the confluence of the Turja and Mantza rivers, the Greeks called it Uksadama and held that it was founded by Orestes.  After its 1360 conquest by Ainurat, it functioned as the Ottoman capital until the 1453 fall of Constantinople.  This city served as the meeting place for a namesake 1827 treaty between Russia and Turkey which guaranteed Greek autonomy, and was the site of a 323 CE defeat of Licinius by Constantine.  FTP, name this city founded in 125 CE by a Spanish-born emperor, the site of a 378 CE victory of the Goths over Valens.
Located on the confluence of the Turja and Mantza rivers, the Greeks called it Uksadama and held that it was founded by Orestes.  
Adrianople or Edirne