The name of the modern city of Kahramanmaraş comes from the recent addition of "Kahraman" meaning "Hero" in Turkish, to "Maras".
The name "Mar'ash" is certified during the Byzantine Empire, although a city rather called "Caesarea Germanicia" by the Greeks and Romans was right next :
Marash or Maras was the capital of the Neo-Hittite kingdom of Gurgum until 711 BC. This information is known to us through the Luwian inscriptions found around Kahramanmaras: "I am Halparuntiya, a Gurgum king, the governor, the son of Larama, grand-son of Halparuntiya, great-grand-son of Muwatalli ..." On these inscriptions, the genealogies that are developed there, allowed us to know until 9 Gurgum generations of kings. The neo-Assyrian texts have confirmed them and position them in time. Tarhulara of Gurgum is known to us by Tiglath-Pileser III, to the 8th century BC. This same Gurgum king is mentioned under Sargon II, with the city of Marqas. That name was found in Akkadian texts of Sargon I and Ur III.
It is possible that the place name "Gurgum" is a late deformation of "Carchemish".
No archaeological excavation was carried out in Kahramanmaraş, but the number of Hittite objects found there is important:
Probably, in the Hittite archives of the 2nd millennium BC, this city was written "Marasa". It is mentioned in the tablet CTH 147, relating of Madduwata crimes around the town of Sallapa. Madduwata had pushed the elders of Pitassa to revolt. He had faced the tanks and 200 men of the scepter-bearer Zuwa who was killed in Marasa while the city had burned.
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My notes of veracity :
Marash, Marasa or Marqas was the present city of Kahramanmaras: 4/5