Investigation. Palestine origin of the name. By Fabian Massa.
Eighty years after the Trojan War (1219-1209 BC), the Dorians (one of the principal ancient Greek tribes along the Ionians and Achaeans) who lived in the Peloponnese and some islands in the Aegean Sea, invaded the Island Crete (1129 BC). Cretans fought bravely, but the thrust was irrepressible Greek island of Crete and was conquered.
Many Cretans were killed, others enslaved and a lot was displaced, which crossed the sea that separates them from Asia Minor to stop invade those lands, transforming them in turn invaders. This tour centuries XI - XII B.C. It makes sense when we explain the name of Palestine.
The region now called Palestine suffered by those between the years 1250 - 1180 invasion of so-called "Sea Peoples" non-Semitic origin, a mixture of pirates and traders from Crete, the Aegean Islands and the south coast of what now Turkey.
The Palestinian voice derives from the Hebrew word Peleshet  (hence philistine), the verb "Pelesh" which means invader, the main tribes were  Tzekelesh, Shardana, Akhaiusha, Danauna, Tzakara, Mass or Meshwesh, Lukki , Dardana, Tursha, Keshesh or Karkisha, Labu and Irven. The original homeland of the dominant group in the federation "pelesati" was the island of Crete.
The Peleshet voice goes into Greek as παλαιστίνιος = Palestinian and from there comes Palestine. Today they can be found the descendants of those first "Palestinians" in the same place as in the years 1000 B.C., the prophet Samuel as King David did after the war against them.
Map Israel - Palestinian territories and Gaza .
With the passage of time and by extension will step to denominate all the land of Canaan as Palestine, when in fact, that name only correspond to the Gaza Strip.
Palestine, Gaza, Palestina.
 Own work, public domain, https://commons.wikimedia.org/w/index.php?curid=2097853