The Philistines -- often nowadays their equated with Canaanites, despite the fact that the only existence either of them has is in the OT -- seem to have changed, culturally, linguisitically, and probably ethnically, over a period of centuries (who doesn't?), with olive oil presses and Greek pottery styles later on, at least one non-Semitic king name (all 7th c BC).(there's a later edition of the work, although I'm not sure it's still in print, the publisher was acquired)Giving Goliath His Due:The name Goliath, like Achish, is not Semitic, but rather Anatolian (McCarter 1980, 291, Mitchell 1967, 415; Wainwright 1959, 79). Not all agree though; the International Standard Bible Encyclopedia (2:524) proposes that Goliath may have been a remnant of one of the aboriginal groups of giants of Palestine who now were in the employ of the Philistines. [1. Naveh (1985, 9, 13 n. 14) states that Ikausu, the name of the king of Ekron in the seventh century b.c., is a non-Semitic name that can be associated with that of the Achish of Gath in David's time. The name in the seventh century has a shin ending that is non-West Semitic.]
New Archaeological Light on the Philistines
by Neal Bierling
foreword by Paul L. Maier
online version
Geez, “their” s/b “they’re”. Wow.
https://www.smashwords.com/profile/view/NealBierling
https://www.goodreads.com/author/show/470392.Neal_Bierling
http://www.ratemyteachers.com/neil-bierling/427852-t
https://plus.google.com/100469528779548988634
http://nealbierling.blogspot.com/2014/09/neal-bierling-archaeological-adventures_64.html
My understanding is that the Philistines were one of the “Sea Peoples” who were migrating, raiding and invading around the turbulent period around 1,200 BC, when there were widespread collapses of many old civilizations around the Mediterranean and Mid East (the Late Bronze Age Collapse). They settled around current day Gaza around the time of the collapse.
Canaanites were local people in the Levant (current Israel and Lebanon) before the collapse (who many centuries later developed into the sea-faring Phoenician civilization). Canaan was also the place name, so different peoples at different times could be described as from there (as Canaanites).