This is a city name that has not been changed from the Bronze Age to the beginning of our era, but has a contemporary localization problem.
During the 2nd millennium BC, Gazziura is mentioned in Hattusa archives about multiple invasions of Gasgas installed further north. The tribes of Kurustama and Gazziura came from the northeast of Tapikka, which was the border between the Hatti and the land of Gasgas.
At the beginning of our era, Gaziura was a residence of the kings of Pontus. Strabo reports the abandoned city of his time: "The Iris has its source in the Pontus. After Comana, it flows westward across the plain of Daximonitis. Then it turns to the north to Gaziura, a royal city in the past, now deserted. It folds eastward after receiving the Scylax and some other rivers and after it flows along the walls of Amasya."