>>212260221 (OP)Palestinian here.
The Palestinian identity is relatively recent, but the name of the region is ancient.
During the Ottoman era, Levantines (Syrians, Lebanese, Palestinians, and parts of Jordan) were categorized as "Syrians."
Levantines in the region identified themselves by the town they lived in. For example, if you were born in Nablus, you would identify yourself as Nabulsi. If you were born in Yaffa/Jaffa, you would call yourself Yaffawi. This is similar to how Germans identified before they unified into one state, when they had separate identities based on their state or town.In the Bible, during the time of Abraham, the land of the Philistines is mentioned, indicating that the term Philistine/Palestine existed long before Israel, according to biblical history. They are considered settlers from Greece, but I believe they were likely Canaanites who mixed with Greek settlers, given that Abraham was able to communicate with the king of the Philistines, and the king had a Semitic name rather than a Greek one. The Roman defeat of the Jews solidified the name of the region as Palestine.