LOL
After the Roman "Philistia", which I believe is roughly the area of the Gaza Strip.
The original area inhabited by the Philistines was somewhat larger than the Gaza Strip—it included Gaza, Ashdod, Ashkelon, Gath (Goliath’s home town), Ekron and some other places. See I Samuel 5-6 for when the Ark of the Covenant was in the possession of the Philistines—a classic NIMBY story. Each town that had it couldn’t wait to get rid of it.