וְֽאֶת־פַּתְרֻסִ֞ים וְאֶת־כַּסְלֻחִ֗ים אֲשֶׁ֨ר יָצְא֥וּ מִשָּׁ֛ם פְּלִשְׁתִּ֖ים וְאֶת־כַּפְתֹּרִֽים׃ (ס)
Rashi on I Chronicles
Pathrusim Pathrusim of the sea; Casluhim, Casluhim of the sea; Philistines, Philistines of the sea.
Rashi on I Chronicles
from whom the Philistines and the Caphtorim were descended The Pathrusim and the Casluhim would switch wives with each other, and from them were descended the Philistines (and the Caphtorim).